“what’s that big empty white building at the top of the Old Soldier’s home”

“Dear PoPville,

Does anyone know the story of the huge, empty, white stone building on the Old Soldier’s Home property at the corner of Rock Creek Church Road and Harewood? It faces the Soldier’s Home Cemetary and Rock Creek Cemetary. There is an old unused gate at the corner, and the building looks like it has been vacant for many years.”