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

Moscow's imposing monument to the Space Age.

Its front wall is striped with a menagerie of fantastic beasts and magnificent monsters.

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

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

This stunning limestone waterfall is the highest in Estonia.

A breathtaking viewing platform over the Alps.

This abandoned office building is a lasting example of Soviet-era architecture.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.

One of the most popular attractions in the small resort town of Kabardinka.

This church combines Christian, Byzantine, and ancient Greek architectural elements.

Spend the night in 1920s Latvia in this historic recreation and movie set.

Tiny communists hammer away on the Olomouc Astronomical Clock.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

A southern Swedish island is home to the last ERSTA artillery battery, meant to protect the shoreline during the Cold War.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

This museum is a full-size replica of an original church constructed during the 13th-century.

A system of constructed rapids and concrete waterfalls in a linear park on the Slepnya River.

Fortifications built for a Soviet invasion that never came now sit abandoned in a losing battle against nature.

Heralded as one of the prettiest castles in all of Czechia.

A normal, unassuming pedestrian overpass has been the demise of many, many trucks.

A centuries-old copper mine that once provided two thirds of the world's copper supply.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.