1. There Was Once a Monorail at Flushing Meadows

Photo from New York City Parks Photo Archive.

During the 1964 World’s Fair, an AMF monorail ran, looking particularly futuristic because of its suspended system. Helmut Eppich writes that there are “humps swelling up from the ground at the lake area near the highways. Apparently, those large humps are the monorail support pylon foundations. Or what’s left.”