An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

Some believe this abandoned Brutalist masterpiece inspired George Lucas's Sandcrawler.

After years of slow decline, a derelict Gothic castle is now being restored to life.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The Bristol Camera Obscura housed in an ancient windmill.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

A historic, reportedly haunted pub that provided inspiration for several famous adventure novels.

17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

The unusual clock on this 18th-century market building has an extra minute hand for "Bristol time."

The Avenue of Mausolea is a series of grand palatial tombs.

One of the most ethnically diverse spots on the planet.

Dedicated to a Bolshevik revolutionary, this museum is a true time capsule of the Soviet era.

Built entirely of interlocking pieces, construction of this Chinese Muslim house of worship required zero nails.

In Kazakhstan, a colorful cathedral with many lives once survived the most powerful earthquake in the region.

This Soviet-era athletic and recreation facility is the highest ice skating rink in the world.

Granny Smiths and Fujis can both be traced back to Kazakhstan, where apples still grow wild.

This retro, UFO-like structure is a remnant of the Soviet-era circus.

This mysterious complex of abandoned yurts and fading murals was meant to be a center of science and spirituality in Kyrgyzstan.