Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The front of this 17th-century cottage also contains a large, stone face.

This fascinating abbey is considered the oldest monastery in the region.

The haunting cadaver tomb of a famous French poet, playwright, and filmmaker.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

A charming and enigmatic sculpture of a lynx haunts the park of Kellinghusen.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

An impressive Neolithic henge with banks nearly 10 feet high.

Believed to be the smallest castle in Europe.

Take a hike to this remote, scenic tea stop in the Canadian Rockies.

The frozen treats at this Cape Town parlor are inspired by Africa's food cultures.

This remote location of this Moorish stronghold means it doesn’t attract many tourists—and that it still has the aura of fear and bravery of the 1300s.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

The medieval-looking hammer beam teak roof may be a Victorian vanity, but it's still absolutely magnificent.

This medieval castle is filled with an eccentric collection that ranges from ancient Egyptian artifacts to taxidermy to a mummified hand that was cut off during a duel.

The only residents of this abandoned housing development full of identical castles are stray cats and dogs.

Try the alligator at this fondue spot, which has been catering to "lovers and hedonists" since 1967.

In the city forest of Augsburg are oval, artificial ponds formed from a World War II bombing campaign.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

In the 9th-century this small spring-fed well became the location of daily mealtime miracles for one Saxon monk.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

A self-built castle made by a mysterious man.