Have you ever heard of Landschaftspark, in Germany? Maybe you have, but it was new to me. Apparently it was a massive industrial ruin that was rehabbed into a park/ art center/ retail place WITHOUT CHANGING THE ARCHITECTURE. One web site describes it like this: “…an industrial wasteland that the Germans transformed into a wildly popular park and tourist destination. Duisburg is in the Ruhr near Dusseldorf. It features acres of natural greenery. The old factory buildings house musical performances and art exhibits. Former ore silos have rock climbing walls. There’s an old blast furnace that’s been turned into an observation deck and more. At night, the old industrial structures are bathed in colored light.” I doubt New England could take advantage of this (our sites are smaller and land is more valuable in such a dense area) but maybe Pittsburgh could learn a thing or two?