From motels and churches to bowling alleys and factories, buildings of all types eventually reach the end of their “natural” functioning lives. Whether to fill an otherwise overlooked market niche, provide affordable housing where it’s most needed, or accommodate a group of talented Millennials with big visions but meager means, adaptive reuse projects are meaningful investments with promising returns. They represent both important opportunities for the design community—and an ever-important role in cities that need to adapt to the future.