A giant donut stands as a popular symbol of Los Angeles iconography.

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

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

This quiet park's strange sedimentary spires were named after Kodak's color film.

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

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

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Three prestigious academic collections come together to create a world-class natural history museum.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

This massive redwood tree has a hole in the base big enough to drive through.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

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

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Canyon walls shrouded in ferns.

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

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

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

What is the Thing?

A spiritual vortex among the red rocks in Sedona.