A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Most-visited and most-photographed slot canyon in the American Southwest.

This amazing oasis of art and plants is hidden on the outskirts of Marrakesh.

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.

The evocative ruins of a 1,000-year-old hill fort lie within a popular tiger reserve.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

An extraordinary "City of Caves" carved from solid stone.

Qatar's oldest market can trace its origins back more than a century.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

Slovenia's first mosque is a striking mix of Islamic and modernist architecture.

A public work of art that also provides some relief from the summer heat.

These primitive rock paintings include a very beloved depiction of a woolly mammoth.

Hidden in the hills is a mysterious stone structure, known only to a few.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

Nelson Mandela lived here with his family from 1946 until his arrest in 1962.

Home to some of the oldest hominid fossils ever found.

Caves that can't seem to quit producing the remains of prehistoric humans.

The world's largest impact crater is mainly eroded but still remembers the planet's violent history.

Just outside Lesotho's capital city, a rock formation takes the shape of a powerful predator.

This sandstone plateau once served as a stronghold for Lesotho's King Moshoeshoe I and his subjects.

Local lore says a serpent-like beast lurks in the deep basin below the falls.

A mesmerizing sculpture marks the site where the activist was arrested after evading capture for 17 months.