Highly recommend the Stanley Hotel Tour. Be sure to stop and get some chocolate and check out the Frozen Dead Guy - Grandpa Bredo
A must try while you are in town. They are cash only, but have an ATM on site.
Highly recommend going for a trail ride at Sylvandale! It's a great way to see amazing views and you get to ride a horse while you do it. What could be better? They are open year round. Great wranglers and well behaved horses.
The place Julie's Westward tale began. Laramie is a little over an hour from Fort Collins. Laramie is where the University of Wyoming is located. There are lots of cute shops, a handle of decent restaurants and just a chill small town vibe. If you go to Laramie please check the weather report. Roads close often between Laramie and FoCo due to wind and other bad weather.