This small, unassuming street is now a canvas for color and creativity.

A mysterious "wedding cake" castle in the middle of the urban desert.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

These free-roaming horses were once destined to disappear from the land.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

A spiritual vortex among the red rocks in Sedona.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Despite a recent paint job, the factory still sits empty.

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

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

An artificial crater field that trained astronauts for lunar exploration.

Limestone caves with spectacular showcase chambers.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A sharp bend in a dramatic river canyon cut through red rocks.

A self-built castle made by a mysterious man.

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

This coastal port saw one of the most significant battles of the Civil War.

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

A tree grown from astronaut seeds which were exposed to cosmic rays.

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

A common entry point to the Griffith Observatory trail holds its own wonders.

Go deep on these fascinating fish, and get a bonus lesson on the importance of marine conservation.

A dramatic coastline that’s home to a rare pine tree.