This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

This salt lake was a former mine site and now attracts visitors for its remarkable pink colors.

One of the world’s oldest surviving convict prisons, once the scene of daring escapes and riots.

This former psychiatric hospital was once one of the largest in Australia.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This network of narrow, medieval passages has the most delightful name.

A friendly pub with a sordid past in cock fighting.

The largest of London's subterranean rivers and once a mad, bad center of London life.

Look up from the busy streets to discover how time is kept!

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

The quiet field that inspired one of the most famous songs of all time.

The Liverpool street made famous by the Beatles is real.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

The most loyal of little dogs, or a Victorian era publicity stunt?

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

A quartet of brightly colored mythical beasts stand sentry at this gateway.