This abandoned mine offers a glimpse at what life was like for those who came to Alaska seeking Gold Rush riches.

The only house built with a turret, crenellations, and a moat in Palmer, Alaska.

The ruins of this Alaska gold mine form a gorgeous ghost town.

Impressive artifacts from Juneau's gold mining days fill this mining site-turned-museum.

This remote fort on the Yukon River is a vestige of the wild Alaska gold rush.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

100-year-old shipwreck you can walk up to at low tide.

The remains of a former logging boom town, crumbled away in the forest.

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.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

One of the largest fleets of armored vehicles in the world, sitting out in the California desert.

This former open-pit manganese mine is now a massive graffiti canvas.

This conservation area is also home to many of the region's desert tortoises.

Crumbling pink walls and murder memorials preserve the pioneer history of Joshua Tree.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

Colorful clay cliffs tower over an unofficial nudist beach on Martha's Vineyard.

Etched into a dry lake bed, this massive directional indicator is accurate without magnets.

These colossal desert barcodes have been fine-tuning spy satellites for decades.

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

On the Oregon coast there is a natural hole that seems to be draining the sea.

The eerie remnants of an ancient forest were hidden under the sand for centuries.