A Neolithic burial site erected around 3000 BC.

This 600-year-old home seems to defy physics.

The last bastion of Roman presence north of the Alps looms over a German town.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

Ancient paintings known as the "Sistine Chapel of Cave Art."

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

A haunting painting meant to capture the calamity of World War I.

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

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

A measuring mishap led to these artificial stone ladies losing their stomachs.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

The remains of the great moral philosopher reside in a university in London.

Inside a London bookstore, a fireplace that once belonged to the illustrator responsible for a famous set of tarot cards.

A house covered entirely with shells.

Historic medieval fortified city in southwest France.

A Spanish forest is filled with mysterious stone carvings.

A micro-communist utopia in Spain with no police, no mortgages and full employment.

Spain's stunning solar energy plant.

Dead weights honor the dead of Portugal's fishing industry.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

This small chapel is built of human bones and decorated with a golden skeleton.