One of the world's oldest and most massive living organisms is a grove of quaking aspens.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The extensive collection of an amateur naturalist.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

Largest collection of mounted dinosaur specimens in the world.

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

Abandoned silver mine strewn with wrecked and twisted structures.

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

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

Visitors to this library are in for a real-world education in modernist architecture.