This Boeing KC-97 tanker is now a restaurant for aviation lovers.

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

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

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

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

The largest source of fossilized insects anywhere.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

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

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

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

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

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

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This spectacular track has run continuously since 1882.

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

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.

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

A technicolor place of worship for Elevationists.