10 Uncrowded Alternatives to Popular National Parks in the U.S.
Big Bend National Park, Texas
Congaree National Park, South Carolina
Great Basin National Park, Nevada
Great Sand Dunes National Park and Preserve, Colorado
Isle Royale National Park, Michigan
Katmai National Park, Alaska
Lassen National Park, California
North Cascades National Park, Washington
Voyageurs National Park, Minnesota
Wrangell-St. Elias National Park, Alaska