"National Parks, federal lands Lifetime Senior Pass goes from $10 to $80 " Says in the link the cost increase was around Labor day this year. The pictured card is what I have, $10 back when.
Local state parks in my area of western PA are free. In Pittsburgh we have North Park, South Park, Mingo Creek State Park, lots of rural areas with a covered bridge festival every September. Historical museums at Fort Necessity, Uniontown, and Fort Ligonier near Greensburg charge mminimal fees, lots of historical reenacting in tri-state area of Ohio, West VA, PA, MD. Christmas markets starting up now at fairground sites in all the neighboring counties.