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

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

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

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

Geological storytelling.

Cliffside houses provide a spectacular view from their perch above the valley.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Vibrant street art created with mixed media.