17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

Designed to celebrate the queen's 40th birthday.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Walk through Czech history in Prague's largest graveyard.

A mocking tribute to the past and modern leadership of Prague.

A half-buried vehicle in Prague's is the latest iteration in a long-running piece by Czech artist David Černý.

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

Dedicated to the works of the legendary special effects artist.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

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

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

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

The first museum in the world devoted to sexual gadgetry.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

Legends surround an ancient tree trunk riddled with nails for good luck.

Baroque celebration of the end of the Great Plague of Vienna.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.