Yesterday, renowned architect I. M. Pei turned 100 years old. Anyone reaching that sort of milestone might be expected to reflect on a life well-lived. But when you have an iconic body of work to your name, there’s a little bit more pomp and circumstance that must be paid. So in honor of the occasion, we’re looking back at nine of Pei’s best works. You may be familiar with his glass pyramid at the Louvre, but do you know which university museums he designed? Or which Washington, D.C., embassy bears his stamp? We thought not. Above, our personal favorites. Fodder perhaps too, for you to wonder—what will Pei create now that he’s reached a new age?