If New York has an unofficial list of top-tier red-carpet addresses, One Beacon Court is on it. The César Pelli–designed tower — known to many as the Bloomberg building — has counted Beyoncé, Brian Williams, Jack Welch, and Steven A. Cohen among its residents. Now a three-bedroom, three-and-a-half-bath on the 43rd floor has come to market at $8,000,000, offering the kind of unobstructed...