A historic castle that served as a backdrop to part of an elaborate extraterrestrial hoax.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

This colorful statue welcomes visitors to a Barcelona park.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

An early 20th-century bullring converted into a modern shopping center.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Infamous and now demolished panopticon prison built by its former inhabitants.

These abandoned country fairgrounds are filled with replicas of Spanish monuments.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

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

Commonly acknowledged as the only public monument to the Devil himself.

The world's largest reflecting pool is just two centimeters deep.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.