Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

An abandoned Depression-era zoo hidden just off the highway.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

The absurd creation is a compulsory destination for selfies in Buffalo.

The first American home of the isolated, egalitarian religion has a trove of Shaker architecture and artifacts.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

The mysterious headstone of an unidentified bank robber was seen visited, every year, by a woman in black.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

Once a black market electronics marketplace, now an otaku shopper's paradise.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

This small stone chapel is a hidden gem just outside the University of New Hampshire campus.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

This factory made "health corsets" that were a step towards liberating women's bodies.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

Yo, Adrian!