Franklin Institute Science Museum

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, make sure not to miss The Sports Challenge, which explains the science behind sports like surfing and rock climbing with the help of simulators. Or explore space without ever leaving the ground at the Fels Planetarium. You can also take in a movie at the IMAX Theater. If you're interested in history, make sure to save time for the Franklin National Memorial, which features a gigantic statue of Benjamin Franklin as well as a collection of his belongings.

While 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, others say that the price made them cringe. As one recent visitor tells TripAdvisor, "The traveling exhibitions are much more interesting, but you have to pay extra for them. … Very little bang for the buck."

The Franklin Institute Science Museum sits just south of Fairmont Park and is open every day from 9 a.m. to 5 p.m. General admission is costly at $16.50 for adults and $12.50 for children, but it includes a planetarium show and the main exhibits. Some temporary exhibits and the IMAX charge additional fees. For more information, check out the Franklin Institute website.