The decaying adobe remains of an old homestead are just off the beaten path in Joshua Tree National Park.

This rustic old building is said to be the most photographed barn in America.

One man's ambition created this psychedelic log home.

An unusual geological feature towers over the remains of a dark episode in United States history.

Native Americans built this circle of stones, which was used to predict astronomical events.

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.

The fifth-longest natural arch in the world, and the longest outside China.

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

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

Experience a charming 1930's version of "infotainment."

These markers are used to document elevation changes around the famed dam.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

The remnants of an early automobile route across shifting sand dunes can still be found in the deserts of Southern California.

Semi-recognized center of the world, with many oddities.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

The formidable fowl can be found standing near an isolated hiking path.

The shortest river in America flows for just 201 feet.

A collection of huge, site-specific sculptures sitting in the Montana woods.

The old fire tower is one of the last of its kind in the United States.

One home in the historic strip hides secret compartments and the ghostly songs of long-gone canaries.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.