Places kheimlicher Wants to Go

An unassuming secret door once led to a legendary watering hole.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

One of only two commuter aerial tramways in the United States.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

New York City's smallest piece of private property.

A semi-scholarly approach to sex.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

Scene of the grisly murder of two Norwegian women in 1873.

A defunct all-girls college which may be the resting place of H.P. Lovecraft's real-life Necronomicon.

The 100-year-old public collection of a New Hampshire dentist that contains taxidermy, Native American artifacts, and a pair of mummy hands.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

The self-proclaimed world's smallest museum, located next to a Massachusetts sandwich chain.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

Painstakingly built dioramas sit unnoticed in a Boston office building.

Where America’s first doomsday cult awaited the end of the world.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.