One of the most easily accessible examples of the rare 1960s UFO houses.

A sculpture of a courtesan towers above Lake Constance, recalling a church scandal.

Visitors may notice something strange walking through this quaint German town.

An unofficial monument to the late King of Pop sits at the base of a Renaissance composer's statue

From open waters to open dance floors—this decommissioned ferry has been transformed into a lively nightclub.

A unique showroom for bathroom fixtures featuring a giant toilet observation deck.

A serious museum dedicated to two German comedians.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

This tribute to the 16th-century composer is now an unusual shrine to Michael Jackson.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

Go surfing on this urban wave, "hacked" by local surfers.

A subterranean display of public art and architecture.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

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

A stairway to heaven, or to nowhere at all.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Stockholm's deepest subway station is also a stunning ecological wonder.

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

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

This work of engineering is imbued with elegance and ingeniousness.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.