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M O N D A Y

In the contemporary United States, social class is still revealed by the size and style of dwellings, but the contrasts are not so dramatic as in post-Renaissance Rome. As Syracuse University architecture professor Patricia Waddy will explain in her lecture, “At Home in 17th-Century Rome,” noblemen and cardinals required elaborate places and extensive staffs, while tradesmen and their families lived in modest store-fronts and—as their residents’ fortunes grew—such small buildings sometimes provided the makings of new palaces. At 6:30 p.m. (reception at 6) at the National Building Museum, 401 F St. NW. $5. (202) 543-8356. (MJ)