If you go to this site and choose a museum you will get 2 tickets for free so you can visit any museum that is one of the venues on the Smithsonian’s site.
I’m already signed up to go visit one!
Some local sites are the Boyertown Museum of Historic Vehicles ( Great local museum)
The Reading Public Museum ( This is where I’m going!)
The Art Museum in Allentown ( great museum but you need time and I don’t have enough because it closes at 4pm)
America on Wheels in Allentown( never been but want to go)
the Brandywine River Museum ( lots of Wyeth here, nice snacks and museum store.)
and the National Christmas Museum in Lancaster ( I enjoyed this tour, but my kids didn’t love it.)
Have a fun weekend whatever you do!