Since 1963, Jerry Gretzinger has been drawing and painting an ever-growing paper map filled with imaginary cities, rivers, lakes, railroads, airports, highways, & farmlands. He uses a photocopier, pens, and paints and keeps track of the growing map's over 2600 "tiles" in a spreadsheet.
"Now Jerry uses a specially crafted deck of cards to determine the outcome of his world, with fictitious cities like “Plaeides,” “Wybourne” and the largest, “Ukrainia.” Each day he draws cards to see how a page of his gigantic map will be modified, with perhaps the most unusual card being the 'void.' With this card a blank spot is put on the map, wiping out previous details completely and opening up a world of new possibility. "
The map was on exhibit at the Massachusetts Museum of Contemporary Art in 2012. A zoomable version of the map is available online.