The best-preserved ancient theater in the world.

A small Byzantine church lost in the middle of the mountains of southern Italy.

Just outside of Jordan's capital lies an ancient castle and intriguing caves dating back to the Copper Age.

You can row a boat through this ancient underground reservoir.

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

Not far from Madrid, a set of perfectly preserved trenches date back to the Spanish Civil War.

This Norman castle has been the scene of assassination plots, religious persecution, and Nazi conspiracies throughout its long history.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

An eccentric German artist built this weird and wondrous castle packed with shocking sculptures and alien art.

Europe's largest dinosaur museum was founded by a passionate autodidact.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

A unique exhibit lets blind people experience famous works of art and architecture with their hands.

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

The morbid items in this small and hidden museum are not for the weak stomached.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

The earliest known map to show America, discovered by accident at a Paris bookshop.

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