What better way to celebrate the return of warm weather than by throwing a block party? When your block is Rittenhouse Square, you can expect more than 50,000 people from all over the Delaware Valley to show up. On hand to offer affordably priced portions of their dishes will be Smith and Wollensky, Barclay Prime, Roy's, Le Castagne, Twenty Manning, Lacroix and Le Bec-Fin. The Starr Restaurant Organization will also be hosting an all-day cooking demonstration. Even the meter cops are taking the day off for this—spots between Broad and 20th, and Market and Spruce streets will be free from noon to five. Everybody wins! Rittenhouse Row Spring Festival, Walnut Street between Broad and 19th sts., 215-972-0101.

Answer riddles and explore the museum—all while under the influence. This hunt requires no previous knowledge of the displays, so don't be intimidated by those History Channel-watching know-it-alls. The generous samples of wines from Italy, Africa and Australia should also help level the playing field. Wined Through History, University of Pennsylvania Museum of Archaeology and Anthropology, 3260 South St., 215-898-4000.