A conversation with: Santiago Calatrava, architect of the WTC transit hub

From the January issue: For one of the busiest architects in the world, the 63-year-old Santiago Calatrava projects an aura of enviable leisure. The Real Deal visited him recently in his sumptuous home/office, formed from two contiguous townhouses on Park Avenue in the 60s (he has a larger office Downtown, as well as one in Zurich and another in Doha, Qatar). His uptown space doubles as his studio, not only for architecture, but also for the painting and sculpture to which he devotes about three hours of each day.[more]