US National Parks Map - The World includes this great country too! I'm proud to say that my parents took us to so many of the National Parks when we were kids and I've added to the list as a grown up. Still more to see!
www.nationalparks.org Can be used in history or geography lessons. I had my "students" sign up to be park rangers and created a lesson plan that had them do a National Park scavenger hunt for a few days.
Casa Grande Ruins National Monument-Free Entry Date: Saturday 9/29/2012 Time: 9:00 AM to 5:00 PM 1100 W. Ruins Dr., Coolidge, AZ 85128 National Public Lands Day free park entrance! Casa Grande Ruins National Monument-Free Entry CG Ruins Natl Monument (520) 723-3172