This iconic park, located mostly in Wyoming’s northwest corner and extending into Montana and Idaho, is the world’s very first national park. Grand Teton National ParkGrand Teton National Park does not ease you in gently. The canyon walls close in around you, and the scenery only gets better with every step you take. Bighorn Canyon National Recreation AreaBighorn Canyon is the kind of place that sneaks up on you. This spectacular recreation area straddles the Wyoming and Utah border, with access points near Green River, Wyoming, and it delivers on every bit of drama its name promises.