A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Bizarre living fossil only grows in a small chunk of the Namib Desert.

Strange sandstone canyon known as the "place broken by itself."

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Lavish royal estate punctuated with heated greenhouses.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The bears of Bern have been a city highlight for over 500 years.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

From working out of his garage to the James Beard semifinals, one Tucson baker has kept his fan base—and his grains—local.

This ancient jade mask depicting the Zapotec bat god was found in the ruins of the pyramids of Monte Alban.

This last stalwart of the now-forgotten feminist restaurant movement served food in an activist atmosphere since 1977.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

Inside the Wayne County airport is an amazing collection of lights and sounds.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.