ZABAWA POLISH FESTIVAL: Friday, Aug. 22, 5-10 p.m.; Saturday, Aug. 23, 1-10:30 p.m., and Sunday, Aug. 24, noon-6 p.m.; Holy Trinity Catholic Church, 2220 Reed St.; Polish food, polka music, dancing, raffles. Cost: Free. Info: 456-0671,www.holytrinityrc.org.
NORTH EAST NATIONAL RIB FEST: Friday, Aug. 22, 4:30 p.m.-12:30 a.m.; Saturday, Aug. 23, noon-12:30 a.m.; Sunday, Aug. 24, noon-6 p.m.; Gravel Pit Park, North East; rib-eating contests, Ladies Auxiliary car show, Jim Archer Memorial motorcycle show, music, more. Cost: Free admission.
Purple Martin Roost Kayak Tour: Friday, Aug. 22, 7:30 p.m.; Vista 3, Presque Isle State Park; see one of the largest purple martin roosts in the state; experienced adult paddlers only; register by Aug. 21; bring your own kayak, lifejacket and light. Cost: Free. Info: 833-7424.
Creek stomp at Elk Creek: Saturday, Aug. 23, 9 a.m.-noon; Erie Bluffs State Park, Route 5, Lake City; bring a pair of water shoes or waders to collect fish and macroinvertebrates; meet at Elk Creek boat launch parking lot. Cost: Free. Info: 833-7424.
Erie Land Lighthouse Tours: Saturday and Sunday, Aug. 23-24, noon-4 p.m.; Erie Land Lighthouse, foot of Lighthouse Street, James N. Thompson land Lighthouse Park; presented by the Erie Playhouse. Cost: $5. Info:www.erieplayhouse.org.
Back to School Bash: Saturday, Aug. 23, 10 a.m.-2 p.m.; Experience Children's Museum, 420 French St.; games, crafts, giveaways and more. Cost: Included with museum admission. Info: 453-3743.