Fun free/cheap outings ideas?

brookeshannon2012

We live around 30 minutes outside of Gadsden, and we're wanting to find ways to get the boys (3 months old) out of the house with us on weekends. We went to Ave Maria Grotto in Cullman this past weekend, and we're planning on visiting the Birmingham Botanical Gardens in the next few weeks, but other than that I'm stumped. Anybody have any cool places to visit with young ones that don't cost an arm and a leg in the Cullman, Gadsden, or Birmingham areas? TIA!