The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

The first island in the world designated a light-pollution-free astronomical observation point.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Tibetan-influenced mountain fortress in Northern Pakistan.

Earth's greatest purely vertical drop at 4,101 feet.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Enormous lake at the bottom of a unique cave system.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

White llama terraces dazzle in Peru's "other Machu Picchu."

Some of the world's only freshwater seals live in one very special lake in Russia.

Fossils, railroads, and waterfalls!

Home to the deepest rift anywhere on Earth.

A volcanic fissure over two miles long and up to 70 feet deep.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

A modern addition to the Greenpoint skyline.

In the most arid desert on the planet, the world's leading telescope allows astronomers to see more than has ever been seen before.

A modern mechanical planetary system, part of a 10,000 year clock.

The world's second largest single-dish radio telescope, once used to contact E.T.

A historic observatory precariously perched at the "Top of Europe."

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

A large spinning bath of liquid mercury, used to probe the early universe.