To support the dome, Tubbs and engineers Freeman, Fox & Partners buttressed the 93-foot-high structure with 48 steel masts. Photo courtesy CHELSEA Space.  Photo 4 of 7 in Rewind: 7 Great Designs from the Past by Kelsey Keith from Prefab Icon: Dome of Discovery by Ralph Tubbs

Rewind: 7 Great Designs from the Past

4 of 7

To support the dome, Tubbs and engineers Freeman, Fox & Partners buttressed the 93-foot-high structure with 48 steel masts. Photo courtesy CHELSEA Space.