A striking symbol of the Bulgarian capital.

"Holy Wisdom" overlooks the city that became its namesake.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

The remarkably well-preserved final resting place of a powerful ancient Thracian king.

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

These were the largest wind chimes in the world when artist Tom Van Sant created them for a California mall in 1967.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

The walls and streets of the ancient city are peppered with penises.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

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

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A rescue facility that caters specifically to wolf-dog hybrids, and educates about these unique animals.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

One of the largest underground systems runs under Canada's largest urban center.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A bit of retro transportation flair preserved in the world's largest department store.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Dedicated to one of the darkest moments in Irish history.

The famous winding walk at Chartres is surrounded in mystery and myth.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.