There are lots of showstoppers in designer Nancy Braithwaite's Atlanta house, and most of them—from the sunroom's lordly eagle to the faux sheep on the velvety lawn—come with a droll backstory. The house, of course, has a story all its own. In the sunroom, oversize black objects have a sculptural effect against crisp white walls and upholstery. Antique wing chairs and custom sofa in Great Plains for Holly Hunt linen. Stools, Christian Liaigre. Urns, Balsamo Antiques. Walls in Pearly Gates, P...