Happy 100th Birthday to our National Parks Visit U.S. National Parks for Free from August 24 to 28The National Park Service waives entrance fees in honor of its 100th birthday. Read More Celebrations, Birthdays, Photo of the Day, HolidaysCynthia SutterAugust 26, 2016Cindi Sutter, Architectural Digest, architecturaldigest.com, U S National Parks, 100th Birthday National Park ServiceComment