Dressing in cool clothing that doesn't cling, and is soft. I can't stand clingy itchy clothes. :( Sometimes hats, depending.
We move in and out of the shade as we walk through any park. EPCOT and AK are our favorites (there's news).
No really special place, just in and out of the heat and sun as the spirit moves us.
Canada, France, China - their movies are nice for a break and cooling off. Oh, and Norway too. I think we are the only people who like the Norway movie!