Franklin Square

Head to Franklin Square (historicphiladelphia.org/day/franklin-square) for a round of mini golf (about $30 for a family of four), a spin on the carousel (about $10 for a family of four), and some free-play (literally, free) on the playground and around the fountain. Warning: If your tykes are geocoding-savvy and figure out the Franklin Fountain (116 Market Street, 215-627-1899, franklinfountain.com) is nearby, you might go over budget.