Italians architects continue to be world leaders in design. Renzo Piano, 77, is the creator of no less than 21 projects for museums all over the world; only the most recent is his redesign for the once stodgy Harvard Art Museum in Boston. Now Stefano Boeri, 58, has just won the $62,000 International Highrise Award for his “Bosco Verticale” (Vertical Woodland) twin high rise-towers of 111 and 78 floors respectively in Milan.