Rosaryville is a 982 acre day-use park and the location of the historic
Mount Airy Mansion. Miles of trails for hiking, biking and equestrians are
available for day use. To gain access to Rosaryville State Park, make a
right turn into the entrance just south of Osborne Road while traveling
south on U.S. 301. Two pavilions, each accommodating 200 guests, are
available for rent. A bathroom is a short distance from the pavilion area.
A $100 security deposit is required for all pavilion rentals. For pavilion
reservations at Rosaryville State Park please call 301-856-9656. Call for
schedule and programs.