This ancient trail has claimed the lives of over 2,000 people.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

The stone-covered graves lie within the ruins of an Old West ghost town.

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

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

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

Alaska Natives have lived on this tiny isolated island in the Bering Strait for over 5,000 years.

The easternmost town in Alaska can only be accessed from Canada.

148 feet long and in the middle of a verdant forest.

A collection of huge Pre-Colombian structures in Alabama.

The terrified face of Henry Wells is etched on this garret window.

These ruins are all that's left of the former Alabama State Capitol.

This botanical garden has been nicknamed "Alabama's Little Corner of Greece."

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

This grisly headstone doesn’t seem to be resting in peace.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

The wooded estate of the Forest Service employee responsible for D.C.’s cherry blossom trees.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.