Originally constructed in 1491, Hammam Yalbougha an-Nasry was one of Syria's finest working bathhouses and something of a city showpiece, yet was closed for maintenance at the time of research with no opening date fixed. If you can manage to get in to take a look around, there's a splendid sun clock inside the dome above reception. If it is operational again, don't leave Aleppo without having a massage and scrub here.