While I don’t live there, I love Colorado. We go at least once a year and I really would love to retire in colorful Colorado.
Rocky Mountain National Park- I usually classify it as my second overall favorite but there are sub categories where it’s solidly #1. It’s one of the few places where I truly feel at peace.
Denver- Yes, it’s a city but it’s got a certain vibe that makes me immediately feel welcome. This past summer, we stayed just to the edge of LODO. I easily walked from our hotel into some of the more fun and vibrant places. We’ve also stayed in a couple of parts of downtown before and had that similar sort of Immersion experience.
The front range- while I also love waking up in the middle of the mountains to be surrounded by peaks, we often stay on the eastern side of the front range. It’s got so much visual appeal but it also aids as a directional marker.
Honorable mentions to the other national parks (especially Black Canyon of the Gunnison), whitewater rafting, Estes Park, the Rocky Mountain National Wildlife Arsenal, the drive in from the southern border through Trinidad, and all of the fun and scenic towns/cities. …Even going west, where the landscape changes more to what you’d expect in Utah and Arizona.