A faithful reproduction of Al-Jazari's enormous water clock.

Templar knights fleeing persecution are said to have left this sword in stone as a landmark in 1307.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

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 bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The first museum in the world devoted to sexual gadgetry.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A fearsome dragon clings to a corner of Munich's city hall.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Cold war icon and onetime "hole" in the iron curtain.

One of downtown Berlin's last reminders of its Communist past.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

A restaurant and observation deck built in a unique broadcasting antenna.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.