Unlike the Please Touch Museum, the Franklin Institute is sure to appeal to kids of all ages, not to mention the young-at-heart. Interactive displays help you and your kids learn about everything from physics to astronomy. While you're here, don't miss the SportsZone, which explains the science behind sports like surfing and rock climbing with the help of simulators. Or explore space without ever leaving earth at the Fels Planetarium. You can also take in a movie at the IMAX theater or test your wits in the museum's escape rooms. If you're interested in history, make sure to save time for the Benjamin Franklin National Memorial, which features a 30-ton statue of Franklin as well as a collection of his belongings.

Most visitors agree that spending a day in the Franklin Institute is a great way to kill some time, especially if you have little ones in tow. However, some reviewers were disappointed that certain exhibitions cost extra.

The Franklin Institute Science Museum sits just south of Fairmont Park and is open every day from 9:30 a.m. to 5 p.m. You can take the PHLASH bus to stop No. 15. General admission costs $23 for adults and $19 for children ages 3 to 11. Some temporary exhibits and the IMAX showings charge additional fees. For more information, check out the Franklin Institute website.