A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

The highest point in Washington state is a volcano covered in glaciers.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

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

The highest bridge in America was built for an almost unnervingly small amount of money.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Largest lake in Great Britain measured by surface area.

When ecosystems collide in the arid Southwest.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Dramatic river bend surrounds a natural red-rocked pedestal.

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

The most famous location in China was home to whole dynasties worth of imperial rulers.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A massive sea stack famous for its appearance in The Goonies.

Medicinal spa created with the discharge from a geothermal energy plant.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The fairy tale castle of the "fairy-tale king."

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Famously misunderstood wonder of the ancient world

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.