Quite simply the largest tree in the world (by volume).

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

The rocks in this arid basin leave trails of movement behind them.

The fifth-longest natural arch in the world, and the longest outside China.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

This mesmerizing and surreal landscape features intricate patterns of white and red sandstone.

A unique geological area spiked with wind-carved rocks that resemble teepees.

Striking, enormous gold-plated sculpture of Buddha installed in the 19th century.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

A giant Troll lurks under one of Seattle's oldest bridges.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

This strange geological landscape erupts with sudden bursts of water.

Highly spherical boulders on the shores of New Zealand.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

Dating back to the second century, vestiges of prehispanic mural paintings are found in this underground palace.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

These floating gardens show what Mexico City used to look during the Aztec Empire.

It's believed this golden brick is part of the legendary lost Aztec treasure.

This stunning and ethereal mural symbolizes the beauty, unity, and diversity of humankind.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.