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

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

It took over half a century but a Russian monument to a famous and tragic space pup finally stands in Moscow.

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

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

This stop on the Camino de Santiago stands high above the underwater ruins of a medieval town.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Hindu temple of the dead home to hundreds of long-tailed macaques.

This sacred cave temple is home to thousands of bats and according to legend, a giant snake king.

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

This demon atop the Notre-Dame de Paris looks utterly bored.

Antique cinematography artifacts fill this museum dedicated to the inventors of the moving picture.

On this romantic tidal island reachable only at low tide the tomb of a famous French writer overlooks the sea.

A small island that was once a key Axis fortification during World War II.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

A chapel on a volcanic core, marking the end of a successful journey.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.