Once the largest unsupported dome in the world, beating out the Pantheon and St Peters in Rome.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Bohemian paradise covered in majestic forests.

Two monstrous faces loom over a village in Czechia.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.

142 ceramic steps become a mosaic once a year.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

A former utopian healing center created by a huckster and built by derelicts.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

Home of modern dancer famously strangled by her own scarf.

A mysterious painting of the self-declared Emperor of the United States watches over a local hof-brau.

This giant head is all that remains of a once proud statue that survived an earthquake but not a fall off of a wagon.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

This Scottish manor house is a lush relic from the life of a literary great.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

These fantastically named natural pools look like something out of a Scottish myth.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

A gigantic sculpture garden is packed with innovative oddities.

Hidden in the hills is a mysterious stone structure, known only to a few.

The "lovely red Vega" of the legendary record-settling pilot.

This quirky Arkansas wax museum does not shy away from the macabre and the grotesque.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.