Macabre astrological automaton clock dating to the late 1400s.

A pink sandstone column once used in ancient times to measure one's belly after a night of debauchery.

There has been an astronomical clock on this spot since the 14th century.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

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

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

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

A hands-off space for graffiti artists to hone and display their skills.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

One part local history, 99 parts gruesome haunted house.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Some of the saint's blood and bones are said to reside in Dublin.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The once highest point in China blends symbolic design with a kick of adrenaline.

An ancient fortification lives on in this Chinese city.

The most famous location in China was home to whole dynasties worth of imperial rulers.

A fake Transylvanian castle houses a cathedral of antlers.

Museum dedicated to the terror regimes of Hungary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Known as "Toronto's Flatiron."

One of the largest underground systems runs under Canada's largest urban center.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.