The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

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

A statue erected in honor of the toadish nickname given to Jersey residents by the French.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

Historic medieval fortified city in southwest France.

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

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

In France, a medieval-style home pays homage to an intrepid explorer who discovered Québec.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

Journey through the ruins of this ancient Roman temple dedicated to the god of war.

The beams of the New College, Oxford dining hall come with an amazing story.

One of Oxford's greatest treasures likely belonged to the legendary King Alfred the Great.

One of Europe's oldest libraries.

Hidden in plain sight, this creepy sculpture watches from above.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

This beautiful spit of land was once the summer playground of the king of Spain.

Giant topiary dog once played a role in a terrorist bomb plot.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The celebrated eyesore created by starry-eyed sweethearts.

The video game-themed street art first popped up in the French city.