Grand Canyon National Park

 Grand Canyon National Park
Grand Canyon National Park is one of the United States’ oldest national parks and is located in Arizona. Within the park lies the Grand Canyon, a gorge of the Colorado River, considered to be one of the major natural wonders of the world. The park covers 1,902 mi² (4927 km²) of unincorporated area in Coconino County and Mohave County.
Most visitors to the park come to the South Rim, arriving on Arizona State Route 64. The Highway enters the park through the South Entrance, near Tusayan, Arizona, and heads eastward, leaving the park through the East Entrance. All park accommodations are operated by the Xanterra corporation. Park headquarters are at Grand Canyon Village, a short distance from the South Entrance, being also the center of the most popular viewpoints. Some thirty miles of the South Rim are accessible by road. A much smaller venue for tourists is found on the North Rim, accessed by Arizona State Route 67. There is no road connection between the two within Arizona except via the Navajo Bridge, near Page, Arizona, entailing a five-hour drive. Otherwise, the two rims of the Canyon are connected via Las Vegas, Nevada, and the Hoover Dam.

Denali National Park

Denali National Park

Denali National Park and Preserve is located in Interior Alaska and contains Mount McKinley (Denali), the tallest mountain in North America. The park and preserve together cover 9,492 mi² (24,585 km²).

The word “Denali” means “the great one” in the native Athabaskan language and refers to the mountain itself. The mountain was named after president William McKinley of Ohio in 1897 by local prospector William A. Dickey, although McKinley had no connection with the region.
Charles Alexander Sheldon took an interest in the Dall sheep native to the region, and became concerned that human encroachment might threaten the species. After his 1907-1908 visit, he petitioned the people of Alaska and Congress to create a preserve for the sheep. (His account of the visit was published posthumously as The Wilderness of Denali, ISBN 1-56833-152-5). The park was established as Mount McKinley National Park on February 26, 1917. However, only a portion of Mount McKinley (not even including the summit) was within the original park boundary. The park was designated an international biosphere reserve in 1976. A separate Denali National Monument was proclaimed by Jimmy Carter on December 1, 1978.