This curious, round temple is the oldest still-standing marble building in Rome.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This modest marker near Notre Dame identifies the very center of Paris.

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

This spooky statue sits outside a famous Prague theater.

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

Macabre astrological automaton clock dating to the late 1400s.

The first museum in the world devoted to sexual gadgetry.