More than 8,000 people were sent to this beautiful Hawaiian peninsula and forbidden to leave, now it is the largest medical ghost town

From above, Kalaupapa looks like the kind of Hawaiian paradise tourists dream about, towering green cliffs dropping toward the Pacific, covered in green vegetation and a settlement frozen in time. But behind that postcard-perfect landscape lies one of Hawaiʻi’s darkest chapters. For more than a century, people diagnosed with Hansen’s disease were forcibly sent to this remote peninsula on Molokaʻi and, under the law, were forbidden from leaving. More than 8,000 people passed through Kalaupapa between 1866 and 1969, turning the beautiful outpost into what Guinness World Records calls the world’s largest medical ghost town.

Today, its abandoned buildings and thousands of graves remain, while a tiny number of former patients still connect the landscape to the community that once thrived here.

How Kalaupapa became a place of exile

Hansen's disease, historically known as leprosy, reached Hawaiʻi after foreign contact in the late 18th and early 19th centuries. By around 1860, the disease had become a serious epidemic in the Hawaiian Kingdom. With little medical understanding of how it spread or how to treat it, authorities feared it could devastate the Native Hawaiian population.

On January 3, 1865, King Kamehameha V approved the Act to Prevent the Spread of Leprosy, establishing compulsory isolation for people believed to have the disease.

Authorities chose the remote Kalaupapa Peninsula because its geography made escape extraordinarily difficult. A cliff rising roughly 2,000 feet separated the peninsula from the rest of Molokaʻi, while the ocean surrounded it on three sides.

Kalaupapa was not the only settlement created for people with Hansen’s disease on Molokaʻi. Kalawao, located on the eastern side of the peninsula, was the first major settlement and became the center of the early isolation community. Kalaupapa, on the western side, developed later and eventually became the larger residential area.

On January 6, 1866, the first 12 patients arrived. They were not arriving at a fully functioning hospital or town. In the settlement's earliest years, there were few facilities and inadequate housing, and residents were largely left to survive with periodic deliveries of supplies. Once sent there, they were legally prevented from leaving. This policy continued for more than a century.

Thousands were separated from their families

People were sent to the settlement regardless of age. Some children diagnosed with the disease were removed from their homes and families. In other cases, healthy children were separated from parents who had been sent away.

Historical accounts compiled by the International Leprosy Association note that healthy children sometimes accompanied relatives voluntarily as mea kokua, or helpers.

Some people arrived as children and spent most of their lives on the peninsula. For them, the idea of simply "going home" after the quarantine system ended was not straightforward. Their adult lives, friendships, marriages, memories and identities had been built at Kalaupapa.

Resistance and the Leper War

The exile system was not accepted passively.

Resistance to forced removal occurred repeatedly, including a dramatic confrontation on Kauaʻi in 1893 that became known as the Leper War. A Native Hawaiian man named Koʻolau, who had Hansen's disease, resisted government attempts to take him to Molokaʻi and hid with his wife Piʻilani in the remote Kalalau Valley.

The conflict escalated into an armed confrontation involving government forces.

The prison became a community

Kalaupapa's story, however, did not remain one of suffering alone. Over the decades, residents transformed the settlement into a functioning community. Homes, schools, churches, medical facilities and other institutions appeared. Patients themselves increasingly participated in the administration of the settlement and pushed for better living conditions.

Missionaries and caregivers also played important roles. Father Damien arrived in 1873 and devoted himself to the residents. He eventually contracted Hansen's disease and died at Kalawao in 1889. Mother Marianne Cope and members of the Sisters of St. Francis later provided care and education, while Joseph Dutton spent decades serving the community.

Medical breakthroughs finally changed everything

Chemist Alice Ball, working in Hawaiʻi in the early 20th century, developed an improved method for preparing chaulmoogra oil for treating Hansen's disease. Her work became known as the Ball Method and helped make treatment more effective.

More effective drugs appeared during the 1940s, dramatically changing the disease's prognosis and reducing the need for isolation.

New admissions to Kalaupapa dwindled. Guinness World Records notes that the last person was reportedly sent there in 1956, even though the legal authority for compulsory isolation remained until 1969. By the 1950 census, 339 people were recorded at Kalaupapa; by 1960, the population had fallen to about 220.

Finally, in 1969, Hawaiʻi repealed the compulsory isolation provisions and residents were free to leave.

Why some residents stayed

Many people left Kalaupapa after the law changed while others stayed. Some had arrived as children and spent decades there. Their families, friendships, memories and entire adult lives were tied to the peninsula. For residents who had spent most of their lives there, leaving could feel less like returning home and more like leaving home for the first time.

The National Park Service notes that the community's history continued after 1969 through the lives of residents who remained.

What happens when the last patient is gone?

Guinness reported four original residents in October 2024. The future of the settlement has raised questions over preservation, access, tourism and the wishes of families whose connections to Kalaupapa remain strong.

Kalaupapa is now a National Historical Park, but treating it like an ordinary tourist attraction would risk overlooking what makes it significant.

Kalaupapa is a place created by a government response to disease and fear, but transformed by the people who were forced to live there.

More than 150 years after the first 12 patients arrived, the peninsula still carries both sides of that history: the injustice of exile and the extraordinary resilience of the community that grew from it.