This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A hand-built folk art installation covered with messages of God's love.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A crumbling hospital from the 1850s on Roosevelt Island.

A library and shop devoted to the body, mortality, and bringing to light forgotten or neglected histories

Mysterious 500-year-old tapestries depict a unicorn hunt.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Elevated freight railway turned wildly successful urban park.

A terrific purveyor of natural history objects and curios.