It’s Corey Feldman’s birthday. Stand by him.STROLLThe Second City’s Neighborhood TourWhat: New walking tour of Old Town shows off architecture and spots where the comedy club performers hang.Why: Don’t laugh it off.When: Thru Oct. 4. Sun. & Wed., 4 p.m.Where: Tours depart from 1616 N. Wells St., at North Ave. Reservations (recommended) at 312-337-3992.BUYPenelope’s Summer SaleWhat: Score 20-50 percent off all spring and select summer clothing and accessories (Shades of Greige men’s blazers, Marais sandals, A.P.C. madras dresses).Why: You’re far from thinking fall.When: Thru Aug. 1. Mon.-Sat., 11 a.m.-7 p.m.; Sun., noon-6 p.m. Where: 1913 W. Division St., b/t Winchester & Wolcott Aves. (773-395-2351).SEEThe Night BookmobileWhat: Exhibit of novelist Audrey Niffenegger’s fantastical mixed-media drawings that originally appeared in London’s The Guardian.Why: Read it and weep.When: Fri.-Aug. 22. Opening reception, Fri., 5-8 p.m. Regular hours, Tues.-Sat., 11 a.m.-5 p.m.Where: Printworks Gallery, 311 W. Superior St., b/t Orleans & Franklin Sts. (312-664-9407).PLAYLincoln Square Block PartyWhat: Have a barrel of fun in the historically German hood with live music, sidewalk sales, food, and drinks.Why: The gang’s all here.When: Sat., 10 a.m.-6 p.m.; Sun., 11 a.m.-5 p.m.Where: Lincoln Ave., b/t Lawrence & Wilson Aves. (773-728-3890).