There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Moonbows over Kentucky.

This glamorous old building is said to have inspired the Tower of Terror.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

A storybook European village in Berkeley.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Ride the subways of yesteryear.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

The largest drain hole in the world.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

One man's vast collection of artifacts and ephemera from matchbooks and postcards to vintage neon signs and cars.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

This quirky curiosity shop takes its cues from the world's bazaars.

The hallucinogenic center of the ancient world.