Frank Lloyd Wright’s most famous house – Fallingwater – is being repaired. But “several of the other approximately 300 remaining single-family Wright houses in this country are far more endangered than Fallingwater: Commissioned by now-octogenarians in desirable areas, their sites, but not their modest-sized rooms, are attractive to affluent buyers who want to replace them with megamansions. Since 2000, the Frank Lloyd Wright Building Conservancy has acquired, repaired and resold these Wrights-at-risk.”