North Entrance Road may not be the most stunning park drive yet it is a grand way to enter Yellowstone. Roosevelt Arch, designed by Old Faithful architect Robert Reamer in 1903, embodies the spirit of the national park system. The sagebrush flats that flank the first mile of track are home to bison, elk and pronghorn. Bighorn sheep are spotted time and again in Gardner Canyon. Eagles, osprey, dippers and kingfishers grace the skies above the Gardner River. This short thoroughfare but five miles (8 km) long is a child-sized prelude to the wonderful world of Yellowstone National Park.