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

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

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

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

"All Mountains - All The Time."

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

This Chinese-style quartz sundial was saved in its final hour.

A downtown park built on top of unclaimed graves.

This eclectic collection documents the wild legacies of "America's Wickedest Street."

The world's largest washing machine collection has more than 1,400 antique items in its exhibit.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

A seven-story 1920s mausoleum outside Denver houses thousands of remains.

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

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

The clock that sets them all.

A research lab and hands-on museum where visitors can experiment with retro technology.

Antique automobiles, phonographs, organs, and farm equipment.