When ecosystems collide in the arid Southwest.

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

An antiquated German apothecary on Chicago's North Side.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

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

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

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

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

The magic's in the hole!

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

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

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

This frequently-photographed waterfall takes only a short hike to visit.

A beautiful geyser under environmental threat.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

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

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A museum dedicated to the history and exploration of both popular music and science fiction.

A beautiful 62-acre Catholic shrine and botanical garden.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

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

The ghostly remains of an accidental sea.

A walk through the historic city center, under the streets of Seattle.

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