Sylvan Beach may be one of our favorite old fashioned amusement parks ever. Besides the fact that it is completely caught in time (not 40% old and 60% new), it's also on the shore of Lake Oneida, so you can swim when you get too hot. It's also close to Syracuse--about 30 minutes I guess. We liked it so much that we think we'd come back and stay in a nearby cottage, or at least overnight at the Dwarf Line Motel and Cottages.
Check out the amazing rides and signage, with nary a Rubbermaid chair in sight.