It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A floating cat sanctuary on an Amsterdam canal.

The sign at the garden gate reads: “These Plants Can Kill.”

Students can borrow artwork from this gallery to display in their own residences.

The man who helped establish the first rules of golf.

The building where Mary, Queen of Scots was said to have bathed in white wine.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

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

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

An eerie, existential museum dedicated to the author of "The Metamorphosis."

Macabre astrological automaton clock dating to the late 1400s.

This spooky statue sits outside a famous Prague theater.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Countless grotesque faces stare out from this eerie Prague art wall.

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

One of the oldest bridges in Norwich was used during the English witch trials and is said to be haunted.

A 16th-century footpath said to be haunted by a young girl that died trapped within its misshapen old house.

This imprint of an old computer keyboard has a unique backstory.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Watch bison, elk, and other wild animals up close at this national park.