One of the figures in this Celtic sculpture continues to puzzle archaeologists.

The bones of two medieval royal lions were discovered at the historic fortress.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

The monster at the center of the Darwin Center Spirit Collection.

Repository for more than 22 million pickled specimens.

Artists and musicians now rule over this former rail station.

Banksy gives themself artistic license with this piece of London street art.

A famous burial ground with a history both grim and literary.

A celebrated bandstand at the center of what was once the worst slum in London.

One fisherman has used his love of pebbles and shore to create a crazy garden of rocky art.

This artificial cave looks like something out of a fairytale.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

A saintly relic hidden in a Prague church basement.

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

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

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

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

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

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

A mocking tribute to the past and modern leadership of 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.

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