Get outside this weekend and enjoy what northwestern Pennsylvania has to offer.

Four party-starters:

• Experience Presque Isle State Park’s sights and sounds after dark. Meet Saturday at the Tom Ridge Environmental Center for the free program (8-10 p.m.)that includes walks on the peninsula’s interior trails.

• Mussel up at Guys Mills Heritage Fest. Erie National Wildlife Refuge will take part in Saturday’s annual festival in Crawford County (10 a.m.-4 p.m.), with a spotlight on the importance French Creek and Muddy Creek have to endangered and rare mussels. Plus there’s food at the Randolph Township Fire Hall and Faith Builders.
• Glide through the Presque Isle lagoons on a pontoon boat. Registration begins at 10 a.m., and rides are at 11 a.m., 1 p.m. and 2 p.m. today, Saturday and Sunday.
• Watch eagles soar at Pymatuning State Park. Stop at the Pennsylvania Game Commission’s Wildlife Learning Center between 8:30 a.m. and 4 p.m. for a tour of great exhibits. then take a seat on the lawn, or walk the lakeside trail, and watch bald eagles, cormorants, Purple Martins, great Blue herons, bluebirds and other birds and wildlife. And we haven’t even talked about the carp (yes, you can still take your own bread to feed them).