99 glorious years! Entrance to all of America’s 408 national parks is free today, so celebrate by checking out the ones in your area and getting your history fix!

Only 127 of the 408 parks charge admission, so if you can’t make it out today September 26th for National Public Lands Day and November 11th for Veterans Day are other upcoming dates with free entry….but the parks are a great place to visit any time of year, so why wait?