Hundreds of lucky felines haunt the ruins where Caesar was murdered.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

Monasteries on rock pillars, once accessible only by frayed ropes.

Ancient paintings known as the "Sistine Chapel of Cave Art."

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A 1:20 scale piece of the Netherlands commissioned by a queen lets visitors take a stroll as giants.

The largest 19th century panorama in the world still in-situ.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

These fantastically named natural pools look like something out of a Scottish myth.

Ancient cliffs resembling a kilt on Scotland’s second-largest island emit an entrancing sound.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

The most loyal of little dogs, or a Victorian era publicity stunt?

Oldest Museum of the Netherlands is a true cabinet of curiosities.

A nomadic museum known for its art exhibitions about religion and faith.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A beautifully eclectic mix of architectural styles.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.