A 1940s nuclear reactor built to produce plutonium for the Manhattan Project.

Nuclear reactor created the plutonium used on Nagasaki.

During its heyday, 72 one-ton buckets from this dredge bore into the Powder River excavating vast gold deposits.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

One of the few existing, fully functional Showbiz Pizza animatronic shows.

This abandoned Civil War fortress is slowly being swallowed by the waters of Lake Borgne.

This unique shop is full of memento mori art, antique medical equipment, secret society paraphernalia, and historical relics.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

This natural wonder is disappearing at an alarming rate.

The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

Nestled near the mountains of western Canada resides this behemoth earth mover.

This amazingly preserved Gold Rush town is a historian's dream.

Historic site where Native American hunters once trapped and killed buffalo.

A small and quirky museum hidden inside a fence.

Built to supply water to farmers in Alberta, this was once was the world's longest elevated concrete structure.

A six-person chapel in the middle of Alberta's badlands.

The natural hot spring that was integral to the creation of Canada's first national park.

A home made entirely from scrapped, reclaimed and recycled material in Whitman County, Washington.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

The century-old remains of an abandoned farm town in eastern Washington.