The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A museum dedicated to exhibiting remarkable outsider art.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The glowing blue Nymphaeum of Emperor Tiberius.

The longest living non-clonal organisms on Earth.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

An homage to everyone's favorite prehistoric cartoon family.

A wall of chewing gum moonlights as collective art.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

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

This geothermal hot spring hides beneath a slowly growing mineral dome.

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

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The magic's in the hole!