C.M.
I'm in northern Va and as far as I know (I could be wrong though) there is no beach near Baltimore. Fun things to do in Baltimore are the science center and the aquarium. My kids LOVE going to those 2 places. But as for beaches, I think the closest one is Ocean City (which I think is about 2-3 hours away, but again I could be wrong). We are making a trip to VA beach which is about 4 hours away from me here where I am.