A meteorite-bounded town in Bavaria.

Tiny artwork tucked within glass letterboxes form this hidden gem of an art gallery.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

This subterranean disco dance club in a Cuban cave comes with bright lights and a dark legend.

Some of the world's only freshwater seals live in one very special lake in Russia.

An institution dedicated to curiosity, logic, riddles, and Mongolia's long history of puzzles.

Home to three historic ships from the age of Vikings.

It houses the remains of a 17th-century version of the Titanic.

The Guardian of Tallinn.

An abstract monument to a symphonic composer.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

A subterranean house of worship carved right out of the bedrock.

The once highest point in China blends symbolic design with a kick of adrenaline.

Khmer Rouge's high security prison.

Built by King Norodom to honor his late father.

A dazzling temple featuring a towering 12-meter golden Buddha.

Giant relaxing Buddha in Malaysia.

A battle between nature and architecture in the Cambodian jungle.

Is there such thing as too many fruit bats? Not anymore.

The largest shot tower in Australia is a unique reminder of industrial ammunitions history.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.