This unassuming building houses one of the world's most extensive collections of cars created by automotive legend Carroll Shelby.

When this 160-year-old church was being built, a stonemason included a hidden homage to his late daughter.

The temporary burial site of the man who shot and killed Jesse James.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

A beautiful combination of living flora with preserved bones covers the shelves of this shop.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

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

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