Vaationing at a National Park has to be one of the best bargains around. But the national park service is offering free entrance several times in 2010. So mark your calendars and make your plans. About 100 national parks are included in the list, with 12 from California. Those include Lava Beds National Monument, San Francisco's Maritime National Historical Park, Muir Woods, and Yosemite. You can see the entire list of 100 free parks here.:
--August 14-15, 2010
--September 25, 2010 (Public Lands Day)
--November 11, 2010 (Veterans Day)
You still might need to pony up for camping reservations, but the entrance fee will be waived.