Outdoor plans

I found a great park & recreational center today. There's a lake there and I packed a lunch and ate it by the water. It was nice although I quickly realized that I'm going to need a hat. Tomorrow I plan to check out the Denver Zoo, so I'll probably pick one up there. Admittedly I'm sure it'll be expensive. I'm trying to find outdoor activities to keep me out and busy because otherwise I don't sleep at night (especially now that I can't refill the ambien) and I stay up all night thinking depressing thoughts.