Abandoned places in Hawaii shatter the postcard fantasy of the islands as nothing but pristine beaches and luxury resorts. Beneath the plumeria-scented surface, Hawaii carries the ruins of three overlapping economic eras that each transformed the landscape and then collapsed. The sugar plantation industry, which dominated Hawaiian life for over 150 years, left behind massive mill complexes, worker villages, and processing infrastructure on every major island when global sugar prices made the operations unprofitable in the 1990s. The U.S. military, which turned Hawaii into a forward operating base after Pearl Harbor, built and abandoned radar stations, bunker networks, and access infrastructure across the volcanic ridges. And the tourism economy itself produced its share of casualties: resorts destroyed by hurricanes that were never rebuilt, botanical gardens that lost their visitors, and amusement parks swallowed by tropical vegetation. Today, Hawaii holds more than 47 verified abandoned locations on Urbex Maps, an extraordinary density for a state of only 10,931 square miles. The tropical climate works fast here. What takes decades to decay in the Arizona desert can be consumed by jungle in a few years.
This guide covers 9 of the most iconic abandoned places in Hawaii, selected for historical significance, visual drama, and the stories behind their emptying. Each entry includes a YouTube video, satellite imagery, and a free GPS coordinate button that saves the location directly to your Urbex Maps profile. No paywall. Just click, sign in, and the spot is yours.
1. Coco Palms Resort
Coco Palms Resort on Kauai was the most famous hotel in Hawaii for three decades, a tropical paradise that defined the island vacation fantasy for an entire generation of Americans. The resort opened in 1953 on the site of an ancient Hawaiian royal coconut grove in Wailua, along the eastern shore of Kauai. Owner Lyle "Gracie" Guslander built the resort around the existing palm trees, creating a Polynesian-themed property where guests were greeted with shell leis, torches were lit at sunset along lagoon pathways, and outrigger canoes carried newlyweds across the property. Elvis Presley filmed "Blue Hawaii" here in 1961, and the wedding scene in the movie became so iconic that Coco Palms hosted thousands of real weddings in imitation.
Through the 1960s, 1970s, and 1980s, Coco Palms was Kauai's anchor property. Every celebrity who visited the island stayed here. The nightly torch-lighting ceremony, where a conch shell was blown and runners lit coconut-husk torches along lagoon pathways, was the signature experience of Hawaiian tourism.
On September 11, 1992, Hurricane Iniki made direct landfall on Kauai as a Category 4 storm with sustained winds of 145 mph. Iniki devastated the island, and Coco Palms took a direct hit. The main buildings were gutted, the roof was torn off the main lodge, the lagoons were filled with debris, and the coconut grove was shattered. The resort's insurance company went bankrupt in the aftermath of the hurricane. Without insurance payouts, the property could not be rebuilt. It has sat abandoned ever since.
For over 30 years, the ruins of Coco Palms have stood along Kuhio Highway in Wailua, visible to every car driving along the east coast of Kauai. The main lodge is a concrete shell. Bungalows are roofless and overgrown with vegetation. The lagoons have silted in and become mosquito breeding grounds. The coconut grove, while damaged, has partially recovered. Multiple developers have announced redevelopment plans over the decades, and some permits have been issued, but as of 2026 the property remains abandoned. The site is fenced and posted against trespassing, but the ruins are clearly visible from the road and from the adjacent Lydgate Beach area.
2. Old Sugar Mill of Koloa
The Old Sugar Mill of Koloa holds a singular place in Hawaiian history: it was the site of Hawaii's first commercially successful sugar plantation. In 1835, Ladd and Company established a sugar operation in the Koloa district on the south shore of Kauai, leasing land from Kamehameha III. The mill they built processed cane from surrounding fields using labor that initially included Native Hawaiians and later drew Chinese, Japanese, Filipino, Portuguese, and Korean workers whose descendants would reshape Hawaiian culture. Koloa wasn't just the start of an industry; it was the beginning of the plantation system that would dominate Hawaiian economics, politics, and demographics for 160 years.
The original 1835 mill was replaced and expanded multiple times over the following century and a half. The stone chimney from one of the early mills still stands and is preserved as a historical landmark in the center of Koloa town, surrounded by interpretive plaques. But the larger mill complex, the industrial heart of the operation with its grinding equipment, boiling houses, and storage facilities, ceased operations in 1996 when the McBryde Sugar Company shut down. The closure was part of the broader collapse of Hawaii's sugar industry: global prices had fallen below the cost of Hawaiian production, and one by one, the mills that had defined island life for generations went dark.
The mill ruins sit in Koloa town, partially visible from the main road. The stone chimney remnant is the most photographed element and is maintained as a public monument with a small park and historical markers. The surrounding industrial buildings are in various states of decay and partial redevelopment. Some structures have been converted to shops and restaurants as part of the Old Koloa Town commercial area, while others remain closed and overgrown. The contrast between the tourist-friendly shops and the rusting mill equipment behind them captures the tension between preservation and development that defines modern Hawaii.
3. Kaniakapupu Ruins
Kaniakapupu sits deep in the rainforest of Nuuanu Valley on Oahu, about 4 miles inland from downtown Honolulu. The ruins are what remains of King Kamehameha III's summer palace, built in the 1840s as a retreat from the heat and politics of the coastal capital. The name translates roughly to "the singing of the land snails," a reference to the distinctive sounds the native Hawaiian tree snails once made in the surrounding forest. The palace hosted one of the most significant events in Hawaiian history: a grand luau on July 31, 1847, attended by an estimated 10,000 people, celebrating the return of Hawaiian sovereignty after a brief period of British occupation.
After Kamehameha III's death in 1854, the palace fell out of royal use. Successive monarchs preferred other residences, and the Nuuanu Valley site was gradually abandoned. The tropical rainforest moved in with the patience and thoroughness that only Hawaiian vegetation can manage. Roots split the stone walls. Vines covered the rooflines. Moss blanketed every surface. Within a few generations, the palace had been almost entirely consumed by the forest.
Today, Kaniakapupu is a collection of mossy stone walls and foundations rising from the dense undergrowth of the Nuuanu forest. The main structure's walls still stand several feet high in places, draped in ferns, moss, and creeping vines. The atmosphere is remarkable: the ruins sit in perpetual green twilight, surrounded by towering trees, with the sounds of tropical birds and falling water. It rains frequently here, sometimes several times a day.
Access is via an unofficial trail that begins near the Nuuanu Pali Lookout area. The trail is muddy, slippery, and not maintained by the state. The site holds deep cultural significance for Native Hawaiians, and visitors are asked to treat it with respect, take nothing, and leave nothing. There have been periodic community discussions about formalizing access and preservation, but as of 2026 the site remains unmanaged and unprotected.
4. Haiku Stairs (Stairway to Heaven)
The Haiku Stairs are perhaps the most famous forbidden hike in the world. The structure consists of 3,922 metal steps climbing the razor-thin ridgeline of the Koolau Mountains above Kaneohe on Oahu's windward side, reaching an elevation of about 2,800 feet. The views from the top, where the ridge drops away on both sides into sheer green valleys with the Pacific visible in every direction, are among the most photographed vistas in Hawaii.
The stairs were built in 1943 by the U.S. Navy as part of a top-secret project to install a VLF (very low frequency) radio antenna on the ridge for communication with submarines across the Pacific. The original wooden stairs were replaced with metal grating in the 1950s. After the Navy decommissioned the station, the stairs were adopted by hikers who spread word of the climb through guidebooks and, eventually, social media. By the 2000s, hundreds of hikers per day were making the predawn climb despite the fact that the stairway had been officially closed to the public since 1987.
The city and county of Honolulu struggled for decades with the enforcement problem. A security guard was posted at the base, but hikers simply found alternate routes through residential neighborhoods and up the ridge. Neighbors complained about trespassing, noise, and parking. The stairs themselves deteriorated without maintenance. Sections were missing, railings were loose, and the concrete anchor points were crumbling.
In April 2024, Honolulu began the removal of the Haiku Stairs. Crews worked from the top down, cutting the metal steps and airlifting them off the ridge by helicopter. The removal was completed in 2024. The stairs that launched a million Instagram posts no longer exist. What remains is the ridgeline itself, the concrete foundations where the stairs were anchored, and the ruins of the Navy radio station at the top. The ridge is still technically hikeable via informal trails from the Moanalua Valley side, though the routes are steep, exposed, and dangerous without the stairs. The site has transitioned from "forbidden but accessible" to "demolished but legendary."
5. Kahuku Marconi Wireless Station
The Kahuku Marconi Wireless Station on Oahu's North Shore was once the most powerful radio transmission facility on earth. When it opened on September 24, 1914, the station could send wireless telegraph signals across the entire Pacific Ocean, connecting Hawaii to Japan, the Philippines, and the U.S. mainland. The Marconi Wireless Telegraph Company of America built the facility on a remote stretch of coastline near the town of Kahuku, where the flat terrain and distance from Honolulu's electrical interference made it ideal for long-range radio transmission.
The station consisted of a massive transmission building, a power plant, operator quarters, and a field of antenna towers stretching across the coastal plain. During World War I, the U.S. Navy took control of the facility for military communications. The station played a critical role in trans-Pacific communication through the 1910s and early 1920s, handling everything from commercial telegraph traffic to military dispatches.
Technology moved fast. By the late 1920s, advances in shortwave radio made the massive Marconi-style longwave installations obsolete. The station's equipment was outdated within 15 years of its construction. RCA, which had absorbed American Marconi in 1919, eventually shut down the Kahuku facility. The antenna towers were dismantled for scrap. The transmission building and associated structures were abandoned.
Today, the Kahuku Marconi Wireless Station ruins sit on the grounds adjacent to the James Campbell National Wildlife Refuge on the North Shore. The main transmission building is a concrete structure with its roof partially intact, overgrown with vegetation. Foundation pads from the antenna towers dot the surrounding field. Interpretive signs placed by the Hawaii Historic Foundation provide context. The site is accessible from the highway and is not fenced, though parts of the surrounding land are within the wildlife refuge and subject to access restrictions. The North Shore setting, with Kahuku Point visible and the open Pacific stretching north, gives a sense of why this location was chosen for trans-oceanic radio over a century ago.
6. Waialua Sugar Mill
The Waialua Sugar Mill was the last sugar operation on Oahu, and its closure in October 1996 marked the end of an era that had defined the island's economy and culture for over a century. The Waialua Sugar Company was established in 1898, shortly after the American annexation of Hawaii. The mill complex on the North Shore processed cane from thousands of acres of surrounding fields, employing a workforce drawn from the same multi-ethnic plantation labor pool that shaped modern Hawaiian society: Japanese, Filipino, Chinese, Portuguese, and Native Hawaiian workers living in company housing and shopping at the company store.
At its peak, the Waialua plantation employed over 1,000 workers and processed tens of thousands of tons of sugar annually. The mill complex itself was a dense industrial campus of steel-framed processing buildings, boiler houses, storage warehouses, and rail infrastructure connecting the fields to the factory. The smokestack was visible for miles across the North Shore.
When sugar became economically unviable in the 1990s, Waialua shut down. The surrounding cane fields were converted to other agricultural uses, including the coffee and cacao operations that now occupy some of the former plantation land. But the mill complex itself was never demolished. Several of the industrial buildings have been repurposed as commercial spaces. A soap factory, small manufacturing operations, and storage businesses occupy portions of the complex. But the core of the mill, the massive processing buildings with their rusting steel frames, conveyor systems, and boiler infrastructure, remains largely untouched. Walking through the partially occupied, partially abandoned complex is a study in Hawaiian economic transition: artisan soap makers and surf shops operating inside the skeleton of the sugar industry.
The Waialua Sugar Mill is located on Thompson Corner in Waialua and is partially accessible. The commercial tenants welcome visitors during business hours. The abandoned industrial sections are visible from the parking areas and common spaces, though entering the derelict buildings themselves is not permitted.
7. Paia Sugar Mill Ruins
The Paia Sugar Mill on Maui's North Shore operated for 120 years, making it one of the longest-running sugar operations in Hawaii. The Hawaiian Commercial and Sugar Company (HC&S) established the mill in 1880, processing cane from the vast central Maui plains that stretch between Haleakala and the West Maui Mountains. The town of Paia grew up around the mill, a classic plantation town with company housing, a general store, churches, and a school, all organized around the economic engine of sugar production.
HC&S was the last sugar plantation operating in Hawaii when it finally ceased operations in December 2016. But the Paia mill itself had stopped processing decades earlier, around 2000, when operations were consolidated at the company's Puunene mill in central Maui. The Paia facility was shut down and left standing: a collection of industrial buildings, smokestacks, and processing equipment surrounded by the small town that the sugar industry built.
Today, Paia has reinvented itself as a surf town and tourist gateway to Maui's North Shore and the Road to Hana. The mill ruins sit at the edge of town, visible from Baldwin Avenue and Hana Highway. Rusting steel structures, collapsed roofing, and the distinctive smokestack mark the site. The surrounding area has been partially redeveloped with shops, restaurants, and residential properties, but the mill buildings themselves remain in their abandoned industrial state. The contrast between the mill's rust-colored ruins and the colorful surf shops of modern Paia captures Hawaii's shift from plantation economy to tourism economy in a single frame.
The ruins are visible from public roads and adjacent properties. The mill site itself is on private land, and direct access to the buildings is restricted.
8. Kualoa Sugar Mill Ruins
The Kualoa Sugar Mill holds the distinction of being the first sugar mill built on Oahu. Constructed between 1863 and 1865 on the windward coast at the base of the Koolau Mountains, the stone mill was built by Dr. Gerrit P. Judd, a former American missionary and advisor to the Hawaiian monarchy, on land that had been a sacred Hawaiian site for centuries. Kualoa (meaning "long back" in Hawaiian) was one of the most culturally important locations in pre-contact Hawaii, a place where chiefs were trained and where the bones of royalty were hidden in the cliffs above.
The sugar mill was a practical failure. The windward side of Oahu receives abundant rainfall, but the Kualoa area proved to have insufficient and inconsistent rainfall patterns for reliable sugar cane cultivation. The mill operated for only six years before closing in 1871. The stone walls, built from local basalt, were left standing. Unlike the sprawling industrial complexes of later sugar operations, the Kualoa mill is a compact, picturesque ruin: thick stone walls framing empty window and door openings, with the dramatic backdrop of the Koolau cliffs rising straight up behind.
Today, the mill ruins sit on the grounds of Kualoa Ranch, a 4,000-acre working cattle ranch and tourism operation that has also served as a filming location for dozens of Hollywood productions, including Jurassic Park, Lost, and 50 First Dates. The mill ruins are included in several of the ranch's guided tour options and are accessible during normal business hours. The setting is extraordinarily photogenic: the compact stone ruins in the foreground, lush green pastures in the middle ground, and the fluted emerald cliffs of Kaaawa Valley behind.
9. Paradise Park
Paradise Park was a 76-acre exotic bird sanctuary and botanical garden tucked into the upper Manoa Valley on Oahu, about 3 miles inland from the University of Hawaii campus. The park opened in 1932, initially as a private estate garden. By the 1950s and 1960s, it had become a full-fledged tourist attraction, featuring over 100 species of tropical birds, extensive walking paths through native and exotic vegetation, live performances of hula and fire dancing, and a restaurant with panoramic views of Manoa Valley and the distant Pacific.
Paradise Park was part of a network of mid-century Hawaiian tourist attractions that catered to a specific era of tourism: families arriving on prop planes and cruise ships, exploring the islands by rental car, and visiting every botanical garden, cultural show, and scenic overlook they could find. For decades, it worked. The park drew steady visitor numbers and became a standard stop on the Oahu tourist circuit.
By the late 1980s, the tourist market had shifted. Visitors were spending less time on structured sightseeing tours and more time at beaches and resorts. Competing attractions, including Sea Life Park and the Polynesian Cultural Center, drew larger crowds. Paradise Park's visitor numbers declined steadily. The park closed in 1994. The birds were relocated to other facilities. The grounds were locked up and left to the forest.
Thirty years later, the Manoa Valley rainforest has consumed the site almost completely. Walking paths are buried under roots and fallen trees. Aviaries have collapsed. The buildings are covered in moss and vines. The vegetation is so thick that in many areas you can't see more than a few feet in any direction. The site is on private land and is posted against trespassing. Access has historically been through informal trails from the Manoa Falls area, but the landowner has taken steps to restrict entry. The ruins are not visible from any public road or trail.
Beyond the List
Hawaii's abandoned places go far beyond sugar mills and hurricane-damaged resorts. Military bunkers from the WWII coastal defense network dot the ridgelines of every major island. Abandoned plantations, processing facilities, and worker camps are scattered from the Big Island to Kauai. Forgotten temples, closed tourist attractions, and hurricane ruins hide in the valleys. With 47 verified abandoned locations on the Hawaii urbex map, the islands have more ruins than most visitors realize. The GPS coordinates are free. The map is open. Just remember: in Hawaii, the jungle doesn't wait.
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