One of the four clock faces on this church is mismatched, in a nod to a historic slight.

The oldest surviving “eel, pie, and mash” shop in London is renowned for its infamous jellied eels.

An architectural oddity hides in plain sight on this iconic London bridge.

Both an engineering feat and a monument to bad colonial politics.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

Murals of the wild parties once held on the frozen River Thames.

The ground on which Shakespeare’s initial playhouse once stood.

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.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

An architectural relic that survived the hands of time.

The largest camel market in West Africa

This fortified sand barrier dividing a contested territory is the longest minefield in the world.

Thousands of colorful pirogues showcase ingenious craftsmanship at the largest fishermen port in Nouakchott.

This remarkably well-preserved mosque stands amid an 11th-century caravansary.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

A geological bull's-eye visible from outer space.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

This sculpture, residing in a quiet corner of a London park, honors the victims of 9/11.

Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.