I don't know if you're specifically looking at civilian airports but RAF Waddington(Lincolnshire,UK) has the WAVE (WAddington VEiwing area),it has been taken-over by a really nice couple called John and Christine who have a fantastic gift-shop and eatery.
Large (free) car-park and the hedge overlooking the airfield has now been cut down to 4 feet high,great for photography and even includes free toilet facilities.