The men's bathhouse - Roman bathhouses were elaborate affairs with a changing room, a cool room, a warm room, a hot room, a cold pool and lots of open space to lounge around in. This was the changing room with individual partitions for people to leave their clothes. Note the ridged ceiling - an example of superior Roman engineering. The ceiling was barreled and ridged to cause the water that condensed on it to drip down the sides of the walls, rather than dripping directly down on the people. The cap trip was "U" shaped on top and channeled the water away from the clothes.