Celebrate "America's Best Idea" with free admission to all the U.S. national parks from Saturday, April 16 to Sunday, April 22 as part of National Park Week. Over 100 of the parks usually charge entrance fees, but you can also save with parks passes
throughout the year. Other free days for 2011 include June 21 for the first day of summer, September 24 for National Public Lands Day, and November 11–13 for Veterans Day weekend.
Top Parks for Spring Visits
Carlsbad Caverns National Park
: Look for the Mexican free-tailed bar inside this massive cave system; the caverns remain in the mid-50s year-round.
Canyonlands National Park
: Spring brings more backpackers and back-country vehicles; four-wheel drive trails are used for Jeep Safari over Easter week.
Great Smoky Mountains National Park
: See buttercups, columbine, arbutus, and hundreds more flowers at the Wildflower Pilgrimage.
Saguaro National Park
: Before summer heat arrives, celebrate cacti and desert wildflowers at the annual Saguaro Festival.
Plan Your National Park Trip
Photo Credit: Saguaros and wildflowers courtesy National Park Service