A guitar mounted on a wall in Temple Bar honors the Irish musician.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

This stone harbor was key to Carnlough's limestone industry.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large park in Dublin.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

This German fountain of a legendary apple wine-loving drink thief will spit on you.

Fantastic views and thousands of love locks.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This tunnel looks like a sliver of Shanghai that's stuck in the past.

It was once nicknamed "the most bombed hotel in Europe."

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.