A somber monument commemorates the site of a Native American reservation marked by suffering.

The winter home of thousands of beautiful snow geese and sandhill cranes.

A Bhutanese temple gifted from the isolated Himalayan kingdom is now a surprising cultural gem located at the University of Texas at El Paso.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

A mysterious drive-in nestled in the forest that leaves little to the imagination.

Three hundred years of preserved Spanish colonial history in San Antonio.

Crumbling hotel echoes with the sounds of the '30s.

More than 21,000 images fill this overlooked gem of a prehistoric site.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

"I did this all while you were watching TV."

A tribute to the little-known group of women who were the first ever to fly aircraft in the U.S. military.

One of the American Southwest's most extensive collections of Navajo rock art.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This large midwestern cavern features impressive rock formations and an underground waterfall.

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

Mine your own precious stones.

The last remains of the extinct Beothuk people native to the island of Newfoundland.

Every winter, the wind carves blocks of frozen water into beautiful abstract shapes inside this unusually curved tunnel.

A hidden gem of a saloon in the middle of a ghost town.

A well-preserved relic of the industrial age steel and iron works that dotted West Virginia.

A full-scale replica of a 1774 colonial settlement in Kentucky.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.