Maryland's environment and government are mainly divided up by counties, with towns interspersed here and there. Where I live is just defined by the county, which is Montgomery County, and there is no particular art museum I can think of, although some of the old mansions have been converted into museums.
The main reason is that we are just a few miles from DC, which of course has the magnificent Smithsonian collection of museums, including several of the finest art museums in the world. If I found walking easier, I'd go a lot more often. But there are some very good art museums elsewhere in Maryland, particularly the one in Baltimore. And I've seen some very good ones in our state's capital, Annapolis, and in some of the beach communities.
You have visited an art museum within the last year