Mark your calendar for these fee-free days in 2011 at more than 100 national parks that usually charge entrance fees. *
January 15-17
(Martin Luther King, Jr. Birthday weekend)
April 16-24
(National Park Week)
June 21
(First day of summer)
September 24
(Public Lands Day)
November 11-13
(Veterans Day weekend)
*Fee waiver includes: entrance fees, commercial tour fees, and transportation entrance fees. Other fees such as reservation, camping, tours, concession and fees collected by third parties are not included unless stated otherwise.
Source: National Park Service
