Sting has just listed his Beaux-Arts co-op with gorgeous views of Central Park. The home has 6,600 square feet, five bedroms and four baths and- 23 closets. Lovely architectural details abound including graceful moldings, a curved staircase and expansive rooms with mahogany inlaid floors. It's been listed at $19,000,000 and was previously owned by Billy Joel. Pictures of the interior.