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

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

This expansive bridge in the Canadian wilderness was originally just built for friends.

New fungal and bacterial species call this deadly lake home.

Mining town from the late 1890s, once home to Calamity Jane.

A sacred lake composed of over 300 separate pools of highly concentrated minerals.

The only road through the heart of Glacier National Park.

Fossils, railroads, and waterfalls!

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Every fall this lake mysteriously drains, like a bathtub with the plug pulled out.

This massive and unusual rock formation near Okotoks is the world's largest known glacial erratic.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

Roadside tribute to a staple of eastern European cuisine.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Massive rock sculptures formed during the time of the dinosaurs still stand undisturbed.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Nazca pilgrimage site covering 370 acres is a popular stop for archeologists and looters.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Death rituals and sacrifice inside a Peruvian megalith.

Huge stone depressions which may have acted as an Incan agricultural experiment.

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

An unexpected desert oasis in South America.