When in Erie, a great thing to do is take a small trip to the peninsula. It is a popular place for walks, swimming, fishing, bike rides, picnics, boat rides, and so on. Also, being a peninsula, it provides very nice views of Lake Erie. If you are planning to spend some time in Erie, the peninsula is well worth the visit.
this is my favorite place in Erie. Its soooo peaceful driving down the tree lined streets and looking at the scenery. If you don't plan to stop and get out of the car, it only takes about 15 minutes to drive around the whole penninsula. there are plenty of things to do on the penninsula, visit the beach, Jog, bicycle, picnic... etc.