A new apartment building in San Francisco puts paid to the idea that there’s nothing new under the sun. The building “has a square, 50-by-50-foot facade with floor-to-ceiling windows and sliding glass doors, all shaded by the exterior louvered blinds. Above the ground floor, a four-story high, 12-foot-wide light well spanned by glass or metal bridges, cleaves the middle of the structure, front to back. It is a remarkable addition to the streetscape.” More importantly, it’s functional, allowing homeowners to create uniquely beautiful combinations of light and shade at the push of a button.