The Cabin John Regional Park Train is a great mini train in the middle of a great park!
Cabin John Regional Park Train. Courtesy of Montgomery Parks, M-NCPPC.
Sandy Point State Park Beach is a huge sandy beach along the Chesapeake Bay with fishing and swimming. It's great for those of us in the DMV because you don't have to go over the Bay Bridge to get to it (unlike Terrapin Beach on Kent Island)
Seneca Creek State Park is a huge park of 6,300 acres in Gaithersburg Maryland. It has 14 scenic miles of Seneca Creek and has lots to explore in all seasons.
Splash Park Mini Golf is located next to the Germantown Splash Park with 18 holes of putt putt fun!