It is not quite placing square pegs into round holes but Douglas Development is fitting 39 apartments into the dome-roofed former roller skating rink above the Adams Morgan Harris Teeter.

Called the Citadel, the project exemplifies adaptive reuse — the architectural idea of transforming industrial sites into living spaces. By preserving the 32-foot-high dome, Douglas created one of Washington’s more unique apartment projects. It includes 31 units hosting large picture windows facing the city and eight interior units with only large skylights to flood the sleeping lofts and living areas with natural light.