The final resting place of the great navigator, or maybe his brother.

Spain's stunning solar energy plant.

The world's largest wooden structure.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

A harrowing sculpture commemorates the four people shot down during the workers strike of 1842.

This 11th century tower is said to be the oldest building in Oxford.

A dead saint, a deadly poison, and a mysterious holy ooze.

A long-buried ancient ruin unearthed right in the middle of the city.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

The oldest working mechanical clock in the world.

These tiny statues form a terracotta army from China's Han dynasty.

An out-of-place slice of France, smack in the middle of Shanghai.

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

Eighty million natural history specimens call this gargantuan museum home.

The designer of this railway tunnel added a birthday present for himself.

A typographic tribute to the many comedic greats who make Great Britain laugh.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A plaque claims this artwork outside a children's hospital was used in the 1998 Quidditch World Cup.

"Holy Wisdom" overlooks the city that became its namesake.

Sofia's legislative center is continuously reinventing itself.

A vast Communist-era exhibition space in the Bulgarian capital.

A striking symbol of the Bulgarian capital.

The castle still holds traces of the abandoned Roman fort it was built atop.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.