At 238 feet above the bottom of a gorge this span is known as the biggest thrill on the road to McCarthy.

The ghostly remains of what was once the world's richest copper mine.

This junkyard made over as a theme park is the "Most Alaskan place in Alaska."

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

Considered by many to be one of the most dangerous highways in Alaska.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

This popular fishing spot at the outflow of a 4.5-mile long hydroelectric tunnel sports a jetty literally made out of classic cars.

Colorful boxes placed over the dead are left to rot and crumble.

Siberian husky that delivered a life-saving antitoxin.

Four-story concrete hotel never opened to customers.

This whimsical stacked cabin looks like something out of a children's book.

The king of U.S. high points towers over every other peak on the continent.

A unique arch graces the Dolores River Canyon near the Hanging Flume.

A remote sandstone plateau named for a legendary cattle rustler.

Only a few signs remain of the buried Colorado mining town that supplied the uranium for the first atomic bomb.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

This interpretive path lets you get up close and personal with dinosaur bones.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.

The secluded site of a 1943 plane crash and amazing rescue is only accessible by hiking through the woods.

The largest outdoor art gallery in the Northwest United States.

This ghost town was once a cult-like religious utopian settlement.

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