Ben's Bistro -- In the Franklin Institute at Logan Circle, Ben's is well set up for kids, serving cafeteria food, hamburgers, and hot dogs. You can enter without museum admission. (Never mind that Ben himself contracted gout from his own poor eating habits.)
Famous Fourth Street Delicatessen -- This classic Jewish deli serves everything up in portions big enough to share: stuffed cabbage, pastrami dogs, matzoh ball soup, kosher bologna sandwiches, potato knishes. Meals end with free chocolate chip cookies.
Franklin Fountain -- This old-fashioned ice cream "saloon" is for after the kids clean their plates. Open daily (until late) in the heart of Old City, the polished parlor offers throwback sundaes, banana splits, egg creams, and, for the picky eater, plain ol' scoops. Located at 116 Market St. (tel. 215/627-1899; www.franklinfountain.com).
Jones -- Close to the Liberty Bell and Independence Hall, this stylish lunch, dinner, and brunch eatery serves an all-encompassing menu that includes burgers, salads, and meat-and-potatoes platters.
Marathon Grill -- You can dine on wonderful grilled salmon and have a nice glass of sauvignon blanc at this modern former diner just off Rittenhouse Square, while the kids choose from chicken fingers, pastas, and burgers. If they're noisy, no problem -- the atmosphere is very casual. Weekend brunch is incredibly popular here, too.
Winnie's Le Bus -- This Manayunk eatery offers kids toys and crayons, plus more healthful -- but no less delicious -- versions of the grilled cheeses and burgers they would no doubt eat elsewhere.