For the First Time in 50 Years, the Bubble House Is for Sale

Since 1969, the “bubble house” at 251 E. 71st Street has been shocking and delighting passersby with its modernist, space-age exterior. It’s impossible not to gawk at the convex oval windows embedded in the house’s pinkish stucco façade, especially considering everything else around it —a row of traditional brick and brownstone homes. “It’s this iconic neighborhood property — the kind of place where people walk by and knock on the door wanting to see it,” says listing…