The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

Cars mysteriously roll uphill on this street.

Thousands of fossilized footprints speckle this Bolivian national park.

Brasilia's oldest newsstand is sheltered by a wish-granting tunnel-tree.

The only restaurant serving indigenous foods from the Amazon.

An obelisk marks the exact center of the continent, as per the calculations of the legendary Brazilian explorer Cândido Rondon.

The best place to send your postcards home from Antarctica.

This grimly-titled Texas cemetery is all that remains of a Wild West settlement with possibly the worst name.

The fully functional, submerged Vanuatu Post Office is definitely one of a kind.

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.

An eatery for UFO seekers on the Extraterrestrial Highway.

Friction between grains of sand cause a curious "singing" sound.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

What looks like missing grout is actually an old pub's peephole.

This extremely narrow tenement boasts a maximum occupancy of just two.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

This phone booth-sized municipal building has been a piece of police property for more than half a century.

A unique attraction and museum dedicated to exploring iconic roadside structures.

While this is positively the smallest library in Canada, it aspires to be the smallest in the world.

America's smallest town is run by its single citizen/mayor/librarian/bartender.

Sitting empty in a lonely Canadian field is a century-old stone bunker sometimes called "One Man's Castle."

The museum is home to four times as many lamps as there are people in town.