I had a four hour layover in PHL, even asked on here where the good spots were in the airport. So I was ready to get some really good shots but no the damn windows were so dirty on the outside you could barely see through them let alone take any good pictures through them. I walked all over the airport and all the windows were the same.
Just thought I would vent in here. So frustrating every other airport BNA, SFO and CLT had perfectly clean windows.