The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

A massive marble foot is tucked away in a small alley near the Pantheon.

Third time's a charm, or in this case, two testicles are.

The mark of the Devil's horns on a marble column in Milan.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

A shrine to one of England's female saints in what is believed to be her former home.

The little-known second castle that William the Conqueror built in York.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

A double cantilever system bridge that was designed to prevent flood damage.

This mundane post marks the old location of the city's main postal hub.

A sweet symbol marks the place where torturous executions were once carried out.

Once designed as a natural history museum, this building is now home to a massive art gallery.

This Roman relic was discovered in Scotland by a mudlarking ferryman.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

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

A rare memorial paying homage to an altruistic woman from the 19th-century.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

The artwork mysteriously appeared within an Edinburgh cemetery.

This historic timepiece was a popular meeting place for romantic rendezvous in the 1960s.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

Repository for more than 22 million pickled specimens.

A clock designed to run with perfect accuracy for 10,000 years.

A tribute to an explorer and naturalist often overlooked by history.