An outdoor display of military missiles developed at Point Mugu Naval Base.

The second-largest giant sequoia in the world.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Thousands of turbines whir at the origin of North American wind power.

This massive statue of John Muir on the side of a California highway was carved from a redwood tree.

The last remnant of a tree that helped prove to the world that sequoias are real—and they’re spectacular.

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

Four hundred granite steps were built into this massive rock by the National Park Service.

When California condors were hovering on the brink of extinction, this recovery program was charged with helping the birds thrive again.

Malibu's first beach home features an astonishing trove of ceramic tiles.

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

A second generation sun-powered marvel lights up the night.

Although he donated over 3,000 acres to Los Angles, Griffith's life was marred by controversy.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

This glamorous old building is said to have inspired the Tower of Terror.

The blinking light atop the iconic landmark has been sending secret messages for decades.

340 bicycles, 65 feet high.

The oldest arched-covered bridge in Virginia has truly withstood the test of time.

One street divides a single town that stands in two U.S. states.

This is one really big nut.

The entire history of the U.S. Space Shuttle Program is painted on an enormous roadside water tank.

The house's confection-like decorations are the result of one man's painstaking work over decades.