By Luke Carothers The original island of the pelicans in the San Francisco Bay, Yerba Buena Island sits between San Francisco and Oakland, California. The first lighthouse was built on…

The Space Needle. Photo: ©Nic Lehoux Arup provides engineering services for strengthening and retrofitting the landmark. By Clayton Binkley, P.E., S.E., PEng; and Kristen Strobel, P.E. Built for the 1962…