Robert A. M. Stern On His Definition Of Luxury And The Most Expensive Home Sale In U.S. History Apr 16, 2019 | Uncategorized In addition to Ken Griffin’s recent record-breaking purchase of a $238 million penthouse in 220 Central Park South, four of the 10 most expensive U.S. home sales in 2018 were in Stern’s buildings. Powered by WPeMatico