A window into a long-lost world, these colorful tiles advertise a long-defunct range of purgative teas, harmless smokables, and diarrhea cures.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

A pair of gigantic baby heads greet passengers at Atocha Station.

This surreal-looking tree pruned more than 1,000 years ago is still producing olives for oil.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

Spain's largest bullring offers a unique glimpse at architecture and history.

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

The world's largest wooden structure.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.