In the 1980s, when Nasser Nakib was a junior architect working in Soho, he used to slip over to Bond Street on his lunch breaks just to stand on the cobblestones. “In Provence you’re in a lavender field and you think, I could die happy here,” he says. “In New York, this block is it for me.”

Built for Louise Grace—daughter of NYC’s two-time mayor and shipping magnate William R. Grace—this stuccoed Renaissance Revival cottage is a rare surviving example of an early American summer estate, set on 3,570 feet of private Maine shoreline.