https://en.wikipedia.org/wiki/Glebe_House_(Arlington,_Virginia)
The Glebe House, built in 1854–1857, is a historic house with an octagon-shaped wing in Arlington County, Virginia. The Northern Virginia Conservation Trust holds a conservation easement to help protect and preserve it. The name of the house comes from the property's history as a glebe, an area of land within an ecclesiastical parish used to support a parish priest.