Notes for Gina- Denver was put where it is because it's at the confluence of Cherry Creek, route of the Smoky Hill immigrant trail leading from Kansas territory, and the South Platte River. That confluence made the place easy to find and reliably well-watered, at least for the first few thousand who settled here. It became the pre-eminent city because of the early Gold Rush finds just up the canyons to the west. Many other towns had more dramatic settings, including Colorado Springs, but only Denver had the magic combination of mineral wealth nearby and almost unlimited room to grow, and it's growing still.
The land around here looks flat, but I was surprised to learn recently that there's a 900-foot difference in elevation found within the city of Denver. The contrast with the mountains next door makes us look flat.
As for towing here, I wouldn't worry about it much. I'm the one who occaisionally raves about my positive experience towing a lightweight 16' Scamp
with my Forester. I won't rehash all that, but be assured that our highway grades are long and not excessively steep, and sharp turns are rare. I find it possible to hit the speed limit on most uphills, and there's only one major paved road where I've resorted to 2nd gear for any distance (the west side of Rabbit Ears Pass).
The greater obstacles to camping here include the lack of pay showers at any campgrounds but the larger state parks, and the early closure of Forest Service CGs that mostly close after Labor Day, long before the aspens change and hunting season takes place.