This artificial archipelago was supposed to resemble a map of the world.

This vibrant side road in Doha was painted light blue to reduce heat.

This mix of Islamic art, vintage vehicles, weaponry, architecture, and history is an ode to eclecticism. 

Qatar's oldest market can trace its origins back more than a century.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

This modern arts center is built around a gem of late-Baroque architecture.

This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

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

Macabre astrological automaton clock dating to the late 1400s.

This spooky statue sits outside a famous Prague theater.

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

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

A Hungarian pharmacy museum with a box full of mummy powder.

The first museum in the world devoted to sexual gadgetry.

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

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

One of the world's first dedicated bank buildings in the world is now the oldest one.

Stockholm's narrowest alley is barely over two feet wide.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

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.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.