A quiet and contemplative oasis in the middle of New York's bustle and riot.

This remote Scottish isle is only inhabited by seals, birds, and the memory of a tragic settlement.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

No one knows who built this strange cave of worship or exactly why.

A magically clear, blue river that seems to spring from nowhere.

This psychedelic tourist trap is a leisurely descent into madness.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

One man's ambition created this psychedelic log home.

The world's "leaniest" tower encourages you to test the gravity of its situation.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

"The House That Love Built" is shying away from "The House That Ghosts Love."

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

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

A stray meteor left this picturesque hole in the Australian outback.

This massive underground salt mine now holds a sci-fi theme park in its depths.

These Australian rock formations look like Martian beehives that have grown up out of the landscape.