Franklin Institute
Franklin Institute, 222 N 20th St, Philadelphia, PA 19103, USA
About
A big-deal science museum with Philly icons and new-school tech. Kids walk through the Giant Heart inside Body Odyssey, launch into Wondrous Space to touch a real meteorite and play with gravity, then chill under the stars in the Fels Planetarium. Tickets run about $29 adult / $25 teen / $23 child (3–12); weekdays after lunch are calmer.