Rosaryville State Park, Nature reserve in Prince George's County, United States
Rosaryville State Park is a Maryland state park in Prince George's County, covering forests, meadows, and open fields alongside several historical structures. The most notable building on the grounds is Mount Airy Mansion, set within a network of trails that wind through different types of terrain.
Mount Airy Mansion was built in 1751 by Benedict Swingate Calvert as the heart of a large colonial estate in Maryland. The building later served as a country inn known as Dower House before the state bought the property in 1976 and opened it as a public park.
The park takes its name from the Calvert family estate, whose presence shaped the land for generations. Walking around Mount Airy Mansion today, visitors can still read the story of a colonial family in the layout of the grounds and the style of the building.
The park has trails for hiking, mountain biking, and horseback riding, with surfaces and difficulty varying from one route to the next. Spring and autumn tend to offer the easiest conditions, as temperatures are moderate and the ground is more stable than in summer or winter.
Eleanor Calvert, daughter of the man who built the mansion, married John Parke Custis, the stepson of George Washington, drawing the estate into the circle of the first American president's family. This family link is not marked by any grand monument on site, making it easy to walk past without realizing the connection.
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