The walls and streets of the ancient city are peppered with penises.

A modern reimagining of a medieval city gate.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The southernmost outpost of the Russian Empire in colonial America.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

One of the tallest statues in the world, and the tallest statue of a goddess in Japan.

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

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

A Jenga-style cylindrical tower of books that appears to go on forever.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Steadily reminding Czechia of its past.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A surreal statue honoring Prague's favorite literary son.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Macabre astrological automaton clock dating to the late 1400s.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.