An abandoned Walmart in McAllen, Texas, is now the largest single-floor public library in America. The 124,500 square foot space contains sixty-four computer labs—three for teenagers, ten for children, two specifically devoted to genealogy—an art gallery, a used bookstore, and a café. (Oh, and an “acoustically separated” lounge for teens. The planners either love or hate teenagers, perhaps both.) Check out the whole space here.