Flagstaff, AZ – This weekend, Grand Canyon National Park will join other parks across the country and waive entrance fees. It's the second of three "Fee Free" weekends scheduled by Secretary of the Interior Ken Salazar. He says it's a way of encouraging Americans seeking affordable vacations to visit their National Parks. Visitors who come to Grand Canyon National Park this Saturday and Sunday will be allowed free entrance and free parking. The final "Fee Free" weekend is set for August 15th and 16th.