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

An architectural marvel that spans the Arda River, and has stories of a haunted past.

An abandoned saucer-shaped monument in the Bulgarian mountains.

An homage to the medieval rulers of Bulgaria.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

Mysterious standing stone formations looks like a petrified forest.

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

After traveling the world, one of the last remaining fully-rigged three masted iron-hulled cargo ship in the world found its home in New York.

Around the perimeter of San Francisco’s second-largest park is a meandering 2.7-mile path designed to inspire contemplation.

This fortress was built using the last surviving stones from the Lighthouse of Alexandria, one of the Seven Wonders of the Ancient World.

This cemetery of rusting Soviet-era steam locomotives and train cars offers an apocalyptic glimpse into a bygone era.

Piran’s oldest square is laden with history and a beautiful 18th-century reservoir.

Sweden's first Viking city is also the site of thousands of burial mounds.

One of the most controversial statues in Romania is an emperor with no clothes.

This once-derelict building is now one of the most beautiful bookstores in the world.

An abstract monument to a symphonic composer.

A replica of the home of a famous fictional troll family.

Pigduck of Turku.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

This handsomely carved wooden church is more than 800 years old.

This floating sculpture of ice is a poignant reminder of nature's power.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

Positioned outside a church, this sinister folkloric figure incited protests in both 1902 and 2002.