Photo by Jeremy Blanchard.

With the revitalization of American cities has come increased excitement about public parks; we may have less land to spare than in Frederick Law Olmsted’s day, but we’re finding creative ways to squeeze more open space and greenery out of brownfields, empty lots, and old train tracks. The mayor of Ithaca, N.Y., even turned his unused parking space into a mini-park.

Now, the nonprofit Trust for Public Land (TPL) has devised a system that allows you to keep tabs on your city’s progress, and compare your hometown to the burg next door. It’s called ParkScore, and it measures and ranks the park systems of the country’s 40 largest cities. It’s not like Walk Score, where you can type in your address and get a walkability rating for your immediate neighborhood, but I’m sure the data could be used the same way (and similarly co-opted as a real-estate selling point).