This lecture was a surveys recent work the firm, Tod Williams/Billie Tsien Architecture including the new Barnes Foundation in Philadelphia, PA; the Center for the Advancement of Public Action at Bennington College, VT; Tata Consultancy Services campus at Banyan Park, India; Savidge Library at the MacDowell Colony; Andlinger Center for Energy and the Environment at Princeton University, NJ. The lecture draws connections between the projects, focusing on the theme of lasting - represented in a palette of durable materials and the care with which institutional clients are building for the future. Also evident in the work is a shared interest in using landscape to enrich the experience of place and sculptural responses to bringing natural light into the enclosures.