Golden Gate Park's historic collection of plants.

This private residence was the template for one of the most beloved television homes of all time.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

A more chill but no less fascinating version of the famous ancient archeological site.

The only quarter of the Old City not dedicated to a major world religion.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

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

Traditional 11th-century outdoor tannery.

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

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

A fortified city, home to a remaining population of five families

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

The other side is actually green.

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

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

Morocco's Argania trees are infested with nut-hungry goats.