Modest by day, illuminated majestically at sunset.

A blooming house of worship for the masses.

This ancient Hindu temple is covered in thousands of colorful statues and has a long mythological history.

The world's second-largest sundial, made entirely out of stone.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

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

Once a resting spot for King Fernando VII.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

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

An early 20th-century bullring converted into a modern shopping center.

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

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

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

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.

An underground network of massive stone arches and their skylit vaults support ruins of portico structures above.

The ancient latrines of the Greeks, in all their public glory.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.