An early 19th-century English style garden hidden in the Rotterdam cityscape.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

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

This doorless 20th-century elevator doesn't stop or slow down.

A surreal statue honoring Prague's favorite literary son.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

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

The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

This spooky statue sits outside a famous Prague theater.

Monument to a suicide protesting the Soviet invasion.

Looming communist pillar with a Czech twist.

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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

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

Steadily reminding Czechia of its past.

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

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.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

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

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.