All that remains of this once-booming mining town are the ruins of a saloon.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

This massive home was constructed by one of the greatest conservationists in Colorado history.

A hotel with a rich Wild West history of miners and bootleggers.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

When ecosystems collide in the arid Southwest.

The largest self-built castle in the U.S., six decades in the making.

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

Take a dip in the world's largest mineral hot springs pool.

These decaying bridges 1,000 feet high are a reminder of the skill it took to cross the Colorado Rockies by rail.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The first railway tunnel to cross the Continental Divide and, at 11,523 feet, was once the highest railroad tunnel in the world.

Elvis's own personal tropical hideaway.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This black shoreline is made up of exploded lava particles.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

The world-record holder for the longest bridge stretching continuously over water.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.