One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

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.

An ancient Egyptian temple in the middle of Madrid, Spain.

A tunnel commissioned by ‘the Intruder King’ to escape from the palace if there were problems.

A small but stubborn relic of Spain’s turbulent past hides in plain sight.

A museum dedicated to the centuries-old cave dwellings that housed marginalized communities on the outskirts of the former capital of Muslim Spain.

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

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

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

Stormy conditions send jets of seawater bursting through holes in the cliffs.

This modern sculpture looks out over the sea and amplifies sound from the inside.

A statue honoring the tragic heroine of a Spanish literary masterpiece.

A street where pouring cider is an art form.

Two large posteriors in one giant statue.

The much-loved protagonist of famed Argentinian comics can be found sitting on a park bench.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

Seeing her husband shot, she took up his banner and rallied the troops to attack repulsing the enemy with the cry, "Those with honor, follow me!"

This enormous censer uses a pulley system installed over 400 years ago.

The oldest Roman lighthouse still in use.

This sculpture in Valencia features 22,000 tiny, obsidian blue figures that pay homage to the Lady of Elche.

Eighty million natural history specimens call this gargantuan museum home.

This former Imperial summer home was the venue for a royal slap that once echoed 'round the world.

Ancient serpentine sacrifice holder that has stood the test of time.