Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A crumbling hospital from the 1850s on Roosevelt Island.

Abandoned Italianate architecture on the coast of Maine.

This 19th century granite fortification is one of the most well preserved forts in New England.

Explore the dark underground corridors of this graffiti-covered former military fortification.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

The final resting place of an iconic drag performer is decorated with pearls and hot-pink lipstick.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The trials and tribulations of marking Poe's grave.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

An eerie, decaying ghost town destined to fade into the forest.

This cabin survived a landslide that killed its owners.

The Old Man of the Mountain’s less-famous, but still beloved little brother is said to resemble a leader of the Abenaki tribe.

Generations of rockhounds got their start at this beloved, historic mine.

The massive Roman arch in New Hampshire that was meant to be a tomb.

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

This modern medieval weapon of war was built to toss pumpkins.