 The museum is furnished with period furniture and decorative objects from Driehaus' collection to help visitors imagine how the Nickersons would have entertained and lived.Driehaus restored the sooty black exterior of the mansion to its original buff-colored sandstone facade with a two-inch laser over 18 months—the first building in the United States to be restored with such technology, although the practice has been fairly common in Europe over the past 30 years.In doing so, chemicals were avoided and the intricate details could be cleaned evenly.