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

See massive fossils that are over 200 million years old in northeastern Arizona.

The magic's in the hole!

A Bibliophile's Dream.

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

A monument to the art of slicing people open.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

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

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

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

A lush green oasis in the middle of Chicago.

Hollowed out cedar log tubs set in an ancient towering forest.

Odd outsider art installations surround a Gold Rush-era ghost town.

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

This shop for all your super spy needs hides an educational secret.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

Stroll through a wonderland of stupendous moss-covered trees.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

America's most famous piece of self-built architecture.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

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

Try not to get slimed in Tribeca.

A giant Troll lurks under one of Seattle's oldest bridges.