I recently read a funny thing on Boing Boing where a another guy had visited Disney World and had a similar experience to me.  When you go there with your kids for the first time, you discover some secret area of your brain that Disney had been pre-wiring for the past thirty years that suddenly got a shock as soon as I entered the park, releasing an otherworldly flow of endorphins.

I think I like the reflections in the water best in this one.