This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

Native Americans built this circle of stones, which was used to predict astronomical events.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

A stunning landscape of bunkers that once stored chemical weapons.

This metallic stampede sits frozen on a Washington ridge yet the artist's vision is still incomplete.