Clear color photographs and a brief text show the step-by-step process involved in constructing a modern office building, specifically the M.I.T. Strata Center in Cambridge, Massachusetts, which was designed by Frank O. Gehry. Richard Sobol took the photographs over a three-year period, beginning in 2001 with the excavation. Although there is plenty of heavy-lifting and earth-moving action for young construction enthusiasts, the focus here is on the workers, from architects and carpenters to electricians and masons. Terms used in the text that might be unfamiliar to young children, such as “excavation” and “scaffold,” are defined in smaller print at the bottom of each double-page spread. (Ages 3–6)