Big Bend, a National Park of impressive size, is the only park of its kind to also act as an international border with another country. The river Rio Grande serves as the park’s southern border, allowing visitors to canoe or kayak down the river with Mexico on one bank and the United States on the other. The river cuts deep swathes into the rock, creating a tunnel-like sensation as visitors navigate vast stretches of the river in search of adventure. Anderson Design Group brought that experience to life in this hand-illustrated National Parks poster. Inspired by the WPA-commissioned artwork of the early-1900s, this vintage poster art serves as the perfect keepsake from a family trip down the Rio. To learn more about the park, check out the Big Bend Conservancy.