The other side is actually green.

A fortified city, home to a remaining population of five families

Mosaics, storks, and brothels—this ancient city has it all.

One of the most spectacular canyons in the world.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

The world's oldest bookshop still in operation.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

A 16th-century Andalusian palace.

12th-century holy complex shares land with a natural park full of heavenly waterfalls and raptors.

Stunning Roman aqueduct used for 1900 years and still standing.

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

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.