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

Victorian "Fancy Craft" Hair Wreaths and Relics.

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

This super steep hike ascends 2,000 feet in less than a mile.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

The largest source of fossilized insects anywhere.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

An annual festival celebrating Colorado's most famous frozen corpse.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

The clock that sets them all.

The remains of the dam that unleashed a 15-foot wall of water on Denver.

Final resting place of a 19th century gold prospector and convicted cannibal.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

Happen to come across a dead eagle? Send it to America's official dead eagle warehouse.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

An incarceration museum on the spot of possibly the oldest prison in England.

Local lore claims this park is named after a young woman who jumped off a cliff.

Final resting place of two dozen New York City harbor ships.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Where the embers of the Big Bang were first detected.