Dan Tishman is the fourth generation of his family to sit at the helm of Tishman Construction. In the last century, the firm has built some of the most high-profile projects in New York and around the globe. It’s currently building the iconic One World Trade Center. And while the firm mostly handles construction for others, it does some of its own developing too (it’s invested in two Times Square properties, the Westin Hotel and the InterContinental, the latter of which is to open within weeks). From his office at 666 Fifth Avenue (which, incidentally, his firm built), Dan, chairman and CEO, can gaze upon a skyline his family helped define.