Panther Junction Visitor Center is the best place to begin your visit. Backcountry & river use permits are issued here. Entrance fees can be paid here. Exhibits provide an overview of geology & natural and cultural histories of the park. The visitor center also has a theater with a park orientation movie shown upon request.The visitor center complex includes a Big Bend Natural History Association bookstore, U.S. Post Office, and restrooms. A water faucet is available for filling personal water containers