This is an outbuilding of the church variously known as Biserica Sf. Nicolae ("St. Anthony Church"), Biserica Buna Vestire ("Annunciation Church"), occasionally Biserica Domnească ("Princely Church"), and most often simply Biserica Curtea Veche ("Old Court Church"; it is adjacent to the ruins of the Old Court), Bucharest, Romania. I'm not sure all of what this building is used for, though clearly if functions in part as an office building for the church.