Each year melting snow turns these Austrian hiking trails into scuba zones.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

This former insane asylum now holds a pathological anatomy museum.

The beautiful baroque library of the Hapsburg empire.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

A curious collection dedicated to human and animal anatomy and pathology.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Unlikely place for krautrock legends to hang out.

Underground farm located in a former bank vault deep within the bowels of Tokyo's business district.

The original "capsule building" is a masterpiece of Metabolist architecture.

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

A Japanese concept restaurant that feels like a party thrown by the monsters in your closet.

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

This battleship of a building was designed by a famed "mad architect."

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

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

An unexpected curiosity cabinet hidden within a department store in the Japan Post tower.

Drinkslinger is an unlikely vocation for a Buddhist monk, but at this Tokyo bar the enlightenment is served in a martini glass.

Meet the world's longest tapeworm in a collection that really gets under your skin.

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

A haunting collection of the vanished and disappearing natural world.