A late-medieval Dutch castle with trick fountains in its whimsical water gardens.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

A beautifully eclectic mix of architectural styles.

The attic of a four-century-old canal house hides a clandestine church.

"The most colorful grottoes of the world.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

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

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

A German apartment building hosting as many trees as human occupants.

This 600-year-old home seems to defy physics.

Terrifying derelict military hospital once housed a recuperating Hitler.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

A small but immensely extravagant palace built by the "Night King."

This historic stone bridge has an entire neighborhood clinging to its sides.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.