It is not the tallest, nor the most visible building in Paris, but the newly erected ‘D2 Tower’ in La Défense is certainly one of the stunning. Its diamond structure exoskeleton, the heavenly rooftop garden and its enchanting light effects at night give a unique and captivating appearance. So perhaps it’s no surprise that architect Tom Sheehan is proud of his Parisian masterpiece that will serve a business complex for over 4,000 people.