A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

The highest bridge in America was built for an almost unnervingly small amount of money.

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 razorback ridgeline has doubled as a scenic drive since the early 1900s.

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

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

The largest self-built castle in the U.S., six decades in the making.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.