There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

A plaque honoring those who, in 1963, changed civil rights in Britain.

Banksy's image of a naked man dangling from the window of a sex health clinic.

This church is said to have connections to the Knights Templars.

This pedestrian footbridge honors Pero Jones, an enslaved African who lived in Bristol.

The massive machine creates cracking displays of indoor lightning.

Historic Hull Street was actually the first street with a proper name in the Boston area.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

An artist sees trees as a medium for sculpture.

Small rustic cabin nested in the mountains of Killington, Vermont.

A landscape decorated with enormous skull sculptures.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This remarkable museum sprung from one of the most important prehistoric archaeological sites in the world.

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

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A gruesome combat between a hunter and a furious momma bear.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

A famous big wave from Japan serves as a tribute to the victims of the disastrous Elbe flood.

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

Local folklore claims that this wall was not built for defense, but to provide labor during a time of famine.

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

A series of playful yellow penguins share a serious message about the environment.

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