Old town fort collins is a great area to window shop, grab a bite to eat, and occassionally enjoy live music. We recommend checking out the exchange in old town for great tacos, cocktails, beer, and mini golf.
New Belgium brewery gives excellent tours! we recommend booking one a couple months in advance. It may also be tour de fat weekend, which we highly recommend checking out the bike parade and festivities.
Fort fun has mini golf, go karts, lazer tag and an arcade. It's a great place to bring the kiddos for some family fun.
Horsetooth reservoir has a couple of swimming beaches, options for paddle board rentals and plenty of good hikes! We recommend Horsetooth Rock or Arthur's Rock for a great view of Fort Collins, go early to beat the crowds, and be prepared for a $10 parking fee.
Raft the Poudre River with Mountain Whitewater and enjoy a beer at paddler's pub afterwards.
The Mish hosts great summer concerts. Of course if you're not in the mood for music, it's also a great place to stop for lunch if you want to take a drive up the Poudre canyon and do some hiking and/or fishing.