Today the Borscht Belt is recalled through the nostalgic lens of summer swims, Saturday night dances, and comedy performances. But its current state, like that of many other formerly glorious regions, is nothing like its earlier status. Forgotten about and exhausted, much of its structural environment has been left to decay. The Borscht Belt, which features essays by Stefan Kanfer and Jenna Weissman Joselit, presents Marisa Scheinfeld's photographs of abandoned sites where resorts, hotels, and bungalow colonies once boomed in the Catskill Mountain region of upstate New...