A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Traditional 15th century Chinese garden in the middle of Vancouver.

England's most famous front door has an accidental doppelganger.

At almost 1,000 years old, this is the oldest known door in all of Britain.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

One part local history, 99 parts gruesome haunted house.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This medieval castle was reconstructed by Carlo Scarpa.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

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

Massive galleon from a box-office bomb docked in Genoa.

A 12th-century Italian skirmish gets reenacted with 500,000 pounds of flying citrus.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

Does this church in Naples hold the true tomb of Vlad the Impaler, the notoriously cruel figure who inspired Bram Stoker's Dracula?

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

These elaborate gothic monuments honor Verona's medieval lords.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.