Pio has visited 29 National Parks

Arches National Park, Badlands National Park, Bryce Canyon National Park, Canyonlands National Park, Crater Lake National Park, Glacier National Park, Grand Canyon National Park, Grand Teton National Park, Great Sand Dunes National Park, Great Smoky Mountains National Park, Joshua Tree National Park, Kings Canyon National Park, Lassen Volcanic National Park, Mammoth Cave National Park, Mesa Verde National Park, Mount Rainier National Park, Olympic National Park, Petrified Forest National Park, Pinnacles National Park, Redwood National Park, Rocky Mountain National Park, Saguaro National Park, Sequoia National Park, Shenandoah National Park, Theodore Roosevelt National Park, Wind Cave National Park, Yellowstone National Park, Yosemite National Park, Zion National Park,