Scratch & Sniff New York

Under the grey, decrepit streets of New York there is a shiny, modern 21st Century city just waiting to emerge. At least there is on Chris Whong's Urban Scatchoff interactive map. Urban Scratchoff uses aerial imagery of early 20th Century New York, captured by a plane in a 1924 flyover of the city. Underneath this 20th Century aerial imagery is another layer which contains more recent