This interactive sculpture allows visitors to leave a message in case a friend passes by.

The world's first interactive human body museum also serves as a chair for a giant orange man.

This Dutch art piece became a Russian icon.

A striking memorial to the Jews of Leiden who were murdered during World War II is scattered throughout the city.

A tiny house showcases the busy life of a local gnome.

This early 19th-century graveyard is the final resting place of Vincent van Gogh's mother.

A trio of red, white, and blue stones embedded in the streets of Leiden are markers of medieval territory and law.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

A man throwing a giant severed hand towers over Antwerp’s main square.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

This former guildhall with a bacon-like exterior is now home to a museum covering 600 years of Antwerp's musical history.

Hidden along this old street in Antwerp is a surreal monument of a bronze arm sprouting four hands.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

This small corner bar is home to a rare 1930s dance organ that still plays tunes for one Euro.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

After being lost for decades, this striking mural depicting the atomic bomb covers the wall of a busy Tokyo metro station.

A railway station takeout shop sells boxed meals in containers shaped like trains and snowmen that hold the country’s abundant regional delicacies.

A hole-in-the-wall antiquities museum in one of Tokyo's most popular megamalls.

A King Kong-like gorilla hangs from the top of this commercial building in Tokyo.

A giant robo-cockroach building devours Tokyo.

This bizarre residential building is the masterpiece of Von Jour Caux, the “Gaudí of Japan.”

Japan's corrupt-mental-institution themed restaurant offers diners a chance to eat inside of filthy cells.

Inside the columbarium, thousands of colorful, high-tech Buddhas guard the ashes of the dead.