This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

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

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

Before Nixon, "watergate" meant canals.

On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

Home to New Mexico's longest bar, this watering hole also has a mining museum and a haunted history.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

This is one really big nut.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Europe's oldest still-operational tea farm also boasts a spectacular view.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

This former hub for crafty philosophers was founded by a writer who died aboard the infamous RMS Lusitania.

Buffalo's abandoned concrete grain elevators are getting a second life.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

The absurd creation is a compulsory destination for selfies in Buffalo.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

This communist country can still appreciate its fragrant past.