This first building is a redwood lattice botanical building for growing exotic plants from all over the world. The reflecting pond in front was originally about two feet deep. During World War I it was deepened so new sailors could learn how to swim. During WWII there was a hospital in the buildings on the grounds for the military, and the pond was deepened once more to be used as therapy for injuried servicemen.
Grr, my computer won't print any more of the pictures I wanted to post. Will have to try again later.
Anyway, the park has thirty gardens, buildings housing museums, art, science centers, railway information and of course the famous zoo. I can't find any statistics in my paperwork but would guess there are about 600 acres included in this park which is right in the middle of residential downtown San Diego. Pretty amazing.
This one is across the street from the above building. It houses an art museum from pre-1900.