This artificial cave looks like something out of a fairytale.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

No one really knows how these old hobby horses got here, but the herd keeps growing.

Over fifty whirling pools left by the glacial age.

The headquarters in Salem doubles as an occult art gallery.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

The site of the first "historically true" UFO encounter in the U.S.

A collection of full-size movie monsters opened to the public.

An eccentric inventor's castle home with its own indoor weather system.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

The early American colonists were such ferocious drinkers the law actually required every town to have a tavern.

Home of Philip Johnson, one of the 20th century's most influential architects.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

The kind of mixed-up place that drives archaeologists crazy.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.