Mason's Hill

Mason’s Hill is a geographic eminence located in Fairfax County, Virginia.

According to state and county historic markers, the location was used early in the American Civil War by Confederate Col. J.E.B.

Stuart and his 1st Virginia Cavalry following the First Battle of Manassas; Col. Edward Porter Alexander built a signal observation tower with a six-foot "astronomical glass" to observe Washington, D.C. until Confederate forces withdrew to Centreville in September 1861.

[3] As noted elsewhere on Wikipedia, on Sunday, August 25, 1861, there was a little known skirmish here between the Union (American Civil War) and the Confederate States of America.

The area now contains a mix of private residences, a school, a church, and the Fairfax County, Virginia Mason District Government Center as well as the Fairfax County Park Authority Mason District Park.