Moss-covered sculptures fill this small Brazilian gorge.

This striking, two-toned confluence of rivers is visible from space.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

These termites have an large and deadly abode—impressive by day, dazzling by night.

A network of ancient Egyptian tombs built into the cliff face along the Nile.

Part shoe store, part sociopolitical art gallery, part zoo.

The deadliest diving spot in the world is also a stunning geological marvel.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

An endless sea of white conical domes.

Sitting atop a rock on Michamvi Pingwe beach, this restaurant becomes its own island at high tide.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

This rare volcano spews the strangest and (literally) coolest lava in the world.

Stay in your own little bubble.

Located in Nairobi National Park, this animal orphanage is the oldest of its kind in Kenya.

Just outside of Nairobi lies a large estate surrounded by endangered Rothschild giraffes, who have been fed from the window by Mick Jagger and Walter Cronkite.

This beautiful waterfall is not easy to reach, but offers a stunning view of the pristine green valley.

The haunting beauty of this little-visited wreck makes it a true hidden treasure.

All that remains of a Japanese fishing vessel that ran aground in 1982.

South Africa's postal service began with a letter left in a boot beneath this tree.

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

Mined to a depth of 240 meters with a perimeter of about 1.6 km, the largest hand-dug excavation in the world.

A safari-themed castle in the South African bush with the largest maze in the southern hemisphere.