Hear the quietest sound from across the dome.

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

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

Cut into a sheer cliff face, these stairs are the only way to reach a secluded Scottish harbor.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

This hilarious English intersection is an automotive whirlpool.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

One of the last remnants of the Bessemer process that revolutionized steel production during the industrial age.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

This building from the Middle Ages was dedicated to the patron saint of Norway.

A moving memorial to the fallen and missing from WWI trenches.

Freddie Mercury's childhood home is now a monument to the iconic Queen rockstar.

This slowly crumbling mansion was home to one of East Africa's richest and most powerful slave traders.

Over the course of its history, this tiny island has held enslaved people in transit and served as a quarantine zone. Today, it's a giant tortoise sanctuary.

After sunset the heart of Zanzibar's historic Stone Town neighborhood transforms into a culinary playground.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A new sculpture calls attention to climate change in the centuries-old city it threatens.