Philadelphia Museum of Art
As with the other famous Philly structures I've found to date on Thingiverse, this began life as a Sketchup Warehouse file. I live by the Art Museum and wanted a model of it I could print, so inspired by the work others had done on the Comcast Tower, Liberty Place and City Hall, I grabbed the Sketchup file. I then simplified that model, converted it to an STL and cleaned it up for printing. Enjoy!