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

Amsterdam's Red Light District leaves little to the imagination.

The history and future of cannabis.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A mocking tribute to the past and modern leadership of Prague.

Puppet theater and museum holding a collection of more than 300.

The most visited, and possibly most controversial, museum in Germany.

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

Terrifying derelict military hospital once housed a recuperating Hitler.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Ever-growing collection of devils in art.

When the rain falls, this drain system turns into a musical instrument.

Gods clash with machines in a power plant regenerated as a museum.

The home of a neoclassical master is now a shrine to his chosen art style.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

The former home of a trailblazing surrealist is still filled with haunting dolls and grim paintings.

An English artist has turned an unassuming ex-council house into a time-lost house of mystery.

Striking occult iconography on a medieval German church.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

"The most colorful grottoes of the world.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

Living trees form the structure of an open-air palace.

Museum in a swimming pool where the water still flows.