A park full of outsider art, created by college students studying outsider art.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

One of the first commercially successful anthracite-powered iron-making operations in North America.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

A cement mixer-turned-kaleidoscope in downtown Norfolk offers different views of the city.

Featuring the largest CinemaScope screen in Pennsylvania, this drive-in has entertained moviegoers for more than half a century.

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Baroque celebration of the end of the Great Plague of Vienna.

A spherical "micro-nation" in the heart of Vienna.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Mummified monks and the accidentally interred, in a 17th-century crypt.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

Europe's second largest ossuary wasn't discovered until 2001.

The mystery of the Putim Ossuary involves a tricorn hat.

A church of bones, decorated with 40,000 human skeletons.

This massive subterranean fissure is known as the "underground Grand Canyon."

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

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.