What's Missing From This Picture?

So this is a leftover from Los Angeles.  It is a picture from the plaza at the Getty Center.  What's missing from this picture? And I am not talking about the people.  Any guesses?  Ok, so you are looking at a wonderful fountain in the plaza.  What is missing is water.  There is a terrible drought in California, and they are doing everything possible to conserve water.  So there is a notice at the edge of the fountain explaining why the fountain is not running.  You might wonder why not fill it and just run it.  The answer is that in this climate, evaporation causes a huge loss of water.  This is a great reminder to everyone to conserve water.