France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.

Where you'll find anything but nothing.

Dedicated to a Bolshevik revolutionary, this museum is a true time capsule of the Soviet era.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Vietnam's largest Buddha statue depicts a female sage.

Home to the world's largest collection of ancient Champa's sculptural works, featuring many Hindu and Buddhist deities.

This candy-pink cathedral of Da Nang is also known as the Chicken Church.

Ukrainian defense contractor's center for studying "pyramid energy."

Gargantuan home of Russian science.

Some Moscow residents once claimed the bizarre, contorted mass of metal on top of the building was used to manipulate minds.

Museum design and public transportation meet in this unique Russian train car.

The world's first museum dedicated to the work of game-changing naturalist Charles Darwin.

The avant-garde design was able to bypass strict Soviet regulations on architecture.

An early-20th-century "dacha" village of quaint cottages curiously located in a modern part of Moscow.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

Former headquarters of the KGB.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

Legends of time travel and magical woodland creatures bolster the natural charm of this verdant sanctuary in the midst of Moscow.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.