A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

The lost American era of gunfighters, bandits, Indians and steam trains is recreated in Sweden.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Descend into the tunnels to experience the life of a coal miner.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

Ancient serpentine sacrifice holder that has stood the test of time.

The "Prussian Versailles" that is as glorious today as when it was built.

This modest marker near Notre Dame identifies the very center of Paris.

The remains of diamond fever taken over by the desert.

A massive Montreal stadium that has seen nothing but trouble since its inception.

The cell which saved the life of Ludger Sylbaris, "the man who lived through Doomsday."

An abstract monument to a symphonic composer.

The encased skull that is widely believed to belong to St. John the Baptist.

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

A sanctuary for wolves in a community which once trembled in fear of the murderous "Beast of Gévaudan."

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Real bones which are said to have belonged to a Polish dragon.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.