An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

A pagan tradition of draping trees with rags eerily lives on.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

An American ghost town hides along a side street in Scotland's capital.

The colorful stairs are made with marble from the world's major quarries.

Neon artworks light up this dark Edinburgh tunnel.

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

Britain's only artificial surfing lake is nestled in the beautiful mountains of Wales.

After years of slow decline, a derelict Gothic castle is now being restored to life.

The grand complex of buildings that comprise Liverpool's Exchange Flags includes a vast World War II bunker that has been frozen in time.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The fences outside some of South London's estates are made from recycled World War II stretchers.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This hidden green space is the city's second largest conservatory.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The television series' iconic giant foot was borrowed from this classical painting.

A surrealist timepiece by the artist of melting clocks.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.