The National Park Service is one-hundred years old today.
I’ve just updated and revised The Best Sites For Learning About Yosemite & Other U.S. National Parks.
Happy birthday @NatlParkService! RT to celebrate 100 years of protecting America's Best Idea #FindYourPark 🎊 pic.twitter.com/qivxlKTUVn
— US Dept of Interior (@Interior) August 25, 2016