I.M. Pei turns 96 years old today, and to celebrate here's a map of 17 of the architect's most significant works. The bespectacled blueprint master hasn't always enjoyed universal acclaim—his early attempts at city planning flopped, quality control issues plagued some of his firm's products, and cost overruns were a near constant concern—but his many masterpieces are true icons of modern architecture. Born in Canton, China in 1917, Pei moved to the United States at 18 to pursue a career in architecture. The rest, of course, is history, with prominent commissions worldwide—including the celebrated Louvre pyramid (above)—the 1983 Pritzker Prize, and a host of other awards.