Aren’t the benefits of a closed, carefully managed garden clearly visible? The experience is controlled, so it tells a story – one which may not emerge from a democratic, anything-goes process (or do you think this sort of slow and deliberate story would emerge in a busy American city in the year 2010?) Charging for admission means that the place can be maintained, improved, and marketed. There are downsides to this, of course — maybe the management makes boneheaded decisions now and then. Maybe you think that vine maple would look better a little to the left — maybe you’re even right.