The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

When ecosystems collide in the arid Southwest.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

All that remains of this abandoned coal town is a beautiful, haunting cemetery.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

A peculiar forest that was handcrafted for government experiments.

Adobe ruins punctuate the beauty of an 800 foot canyon carved by the Canadian River.