A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A building so large that it has its own weather.

Former wax museum from the 1960s, home to many wax U.S. Presidents and the famous White House miniature.

Ice cream stand, snack bar, and time capsule of milk conveyance.

Dim sum, served in a grand old theater.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Pompeii's less famous neighbor is still revealing her secrets.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Breathtaking and huge 430 year old maps of Italy.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The celebrated eyesore created by starry-eyed sweethearts.

Amsterdam's Red Light District leaves little to the imagination.

One part antique store, one part curiosities hodge-podge.

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

Turning night into day in Victorian-era Austin to thwart a serial killer.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Unrepaired walls from a 1920 anarchist bomb attack.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.