http://www.flickr.com/groups/1347057@N22/ Diocletian windows, also called thermal windows, are large segmental arched windows which usually are divided into three lights (window compartments) by two vertical mullions. The central compartment is most often wider than the two side lights on either side of it. Diocletian windows are named after the windows found in the Thermae (Baths) of Diocletian (AD 302) in Rome. The Thermae are now part of the church of Santa Maria degli Angeli e dei Martiri. The variant name, thermal window, also comes from their association with the Thermae of Diocletian. Undivided semi-circular windows or opening will not qualify for this group but divided arched windows which are not within a complete semi-circle may be included. Wed, 30 Dec 2009 03:33:26 -0800 Wed, 30 Dec 2009 03:33:26 -0800 http://www.flickr.com/ http://farm2.staticflickr.com/1180/buddyicons/1347057@N22.jpg?1286907479 http://www.flickr.com/groups/1347057@N22/