A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

One of the largest Roman settlements in Portugal.

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

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

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

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

Traditional 11th-century outdoor tannery.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

This former royal palace with gorgeous gardens became the first museum in Morocco.

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

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

This unusual lava tube spouts seawater during high surf.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

A line of blue paint marks the route of the inaugural parade.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.