The house remained in the Rohrer family until 1944, when it was acquired by the Washington County Historical Society.

[3] The Hager House is located off Key Street in Hagerstown City Park, and is open for visits from April through December.

On June 5, 1739, Jonathan Hager purchased 200 acres of land in the Great Appalachian Valley between the Blue Ridge and Allegheny Mountains in Maryland.

The central chimney allowed more heat to fill the home, rather than escape through the outside walls like an English Colonial.

The house rests atop two freshwater springs that naturally run 40 degrees Fahrenheit throughout the year.

The springs not only regulated the room's temperature, but also served as drinking water and preserved food like a modern-day refrigerator.

This embrasure, similar to a Medieval castle's arrowslit, could be used to attack an incoming intruder while keeping Hager out of site.