Edifice Maps Simple Sinatra site showcasing maps of Chicago's built environment, made with building data from Edifice database. More info here. We designed the maps using TileMill for the Reinventing Chicago Hackathon, October 6-8 2012 in Chicago. Want to see how the sausage was made? TileMill projects can be found here. We borrowed the site template and map styles from the wonderful folks at Mapbox.