Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

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

London's smallest police station is barely the size of a phone booth.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The United States Capitol's former columns still stand.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

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.

This small red school was where Germany signed their surrender during WWII.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

The world's largest boar is a huge steel titan found at a French rest stop.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

Tintin's creator is celebrated in an immersive museum that's an astounding work of modern art.

This vast World War II defense line was the site of a fierce battle.

Inside this metro station is a section of the city's former medieval fortification.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Lumps of significant stone from around the world surround a flaming monument for peace.

A striking memorial to the Jews of Leiden who were murdered during World War II is scattered throughout the city.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Museum celebrating the history of computers, especially their role in codebreaking.