Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

Most-visited and most-photographed slot canyon in the American Southwest.

The site of an underground detonation of a megaton nuclear bomb in the middle of the Mojave Desert.

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

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

This set of three large, volcanic hot springs is a favorite haunt for intrepid divers.

From the Difference Engine to the Cray-1, all under one roof.

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

The unbelievably opulent home built for an infamous newspaperman.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

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

Rippling sand dunes frozen in the Arizona rock.

Coastal dunes, site of buried Egyptian movie set and former utopian colony.

Colorful Native American paintings are hidden within this small cavern.

One of the last free public hot springs is decorated with hippie art.

Salt is slowly eating away this abandoned saltworks town in the desert.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.