The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

Crumbling necropolis set high above Fez.

The oldest known university in the world is in Fez, Morocco.

Traditional 11th-century outdoor tannery.

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

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

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.

Vast stretch of tide-pools with a unique Moroccan charm.

This historic square in Nepal is home to temples dating back to the third century.

Sacred Buddhist home of some spiritual monkeys.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Named after the Goddess of Harvests, Annapurna is the deadliest member of the Eight-thousanders club.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

These pretty kitties killed and ate as many as 135 railway workers.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

A display of magnificent stained glass windows is the first exhibit of its kind.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.