This famous bridge twisted itself into oblivion, but not for the reason you might think.

This natural sea cave hides a small wonderland of natural turquoise beauty.

Of all the origin stories for weed's secret code, this one likely has the goods.

This conservation area is also home to many of the region's desert tortoises.

The ghostly remains of an accidental sea.

These lush groves of fan palms rise up like oases out of southern California's Colorado Desert.

One man's quest for the ultimate road trip vehicle.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

A statue of the owner stands outside of this museum, once the most popular brothel in town.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

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

A Roman-style column in Oregon hides a spiral staircase inside.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

The unbelievably opulent home built for an infamous newspaperman.

A remote crossroads honoring a fallen talent.

A massive volcanic plug is now a protected area that hosts a number of bird species.

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The largest and most well-preserved petroglyph site in the Verde Valley.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancient pueblos built into the base of a natural canyon wall.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.