Sculpture on a Grand ScaleThe Kingdome, John (Jack) Christiansens best known work, was the largest freestanding concrete dome in the world. Built amid public controversy, the multipurpose arena was designed to stand for a thousand years but was demolished in a great cloud of dust after less than a quarter century. Many know the fate of Seattles iconic dome, but fewer are familiar with its innovative structural engineer, Jack Christensen (19272017), and his significant