In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

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

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

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

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.