This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A Jenga-style cylindrical tower of books that appears to go on forever.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

A massive 1830s industrial site once known as Czechia's "Iron Heart" has been transformed into a playground of science, technology, and art.

The blowhole bursts spectacularly right next to the buildings in a medieval seaside town.

This house's itty bitty size means no humans allowed.

This abandoned viewing platform has become a monument to unnecessary government spending.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This man-made mound monument was built out of soil from all across the Polish empire.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

The site of the first battle of World War II.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

This antique thermometer honors the creator of the first universal temperature scale.

The house that took a plunge into the facade of a museum.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.

A Christian retreat founded to welcome refugees fleeing from the Nazis during World War II.

This famous writer's tombstone is a literary pilgrimage site that was publicly defiled by a rival.

Outstanding, eerie frescoes and decorations fill this 19th-century monastery.

An homage to the medieval rulers of Bulgaria.

A communal oasis on Lake Zurich.

The steepest classic funicular in the world glides along a dizzying incline.