Good walking path with military equipment and vehicles to see along the way. There is also an indoor museum that is an interesting visit.
An interesting book store that has cats roaming free. A fun place to go if you like cats and books!
A favorite date restaurant especially after hiking. Bacon on a stick was excellent.
Fun amusement park. It will be decorated for Christmas. The hours and weather may be restrictive, but worth looking into.
The gardens may be mostly under the snow, but the butterfly exhibit is indoors. We have never been there in the winter...
Fun walking around the island and across to Harrisburg. There is a nice river walk. It would be a fun thing to do if the weather is on the warmer side.