Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The longest staircase lock in Britain.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

A century-old tradition has culminated in a small but singular collection of feline effigies.

Follow the original medieval paths that wind through this intriguing section of the city.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

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

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

Hear the quietest sound from across the dome.

Eighty million natural history specimens call this gargantuan museum home.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

Dating back to 1812, this is the oldest racecourse in the Southern Hemisphere.

This small group of sand dunes manages to pack in a strange rainbow of colors.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

An encyclopedic collection of mammal penises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This plaque marks the former home of one of the first women physicians in the Netherlands.