With roughly two-dozen craft breweries--and some of the earliest breweries in the craft-brewing revival that begin in the 1980s--Fort Collins is sometimes referred to as the Napa Valley of beer. From New Belgium and Odell's to Horse and Dragon and Zwei to a larger brewery that has a stable full of very large Clydesdales, you're in a place many beer lovers love to visit.
Brewery tours are available. Or consider renting a bike and spending time at a few of the breweries. The Visit Fort Collins Guide has recommendations for pubs and breweries in town and you'll find a map of Fort Collins breweries on the larger Colorado Brewery List.