http://redlib.catsarchywsyuss6jdxlypsw5dc7owd5u5tr6bujxb7o6xw2hipqehyd.onion/r/MapPorn
As long as OpenStreetMap knows about it, the site will render it, so the options are really endless: parks, airports, islands, neighborhoods, you name it. I spent a long time refining how the translation algorithm works, but I think I have it tuned to within 5-10% complete accuracy with the real thing.