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

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

Unusual building appears to be haphazardly built from randomly piled bricks.

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

One of the world's tallest statues is also one of its most hated.

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

Gargantuan home of Russian science.

Stalinist skyscraper built with help of cryotechnology.

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

Stalin's secret bunker.

Replica of mosque destroyed by Russia in the 16th century.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

A psychological self-portrait in the form of a giant, segmented head.

Practice your Dirty Dancing lifts in the manmade lake where Johnny Castle himself did.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

The world's largest fire hydrant is supposedly tornado-proof.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

The only rotating bar in New Orleans has been slowly spinning since 1949.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

A unique geological area spiked with wind-carved rocks that resemble teepees.