What state does the Grand Canyon belong to?

The Grand Canyon is located in the northwestern part of Arizona, in the United States. It is a gorge carved by the Colorado River and is considered one of the most impressive natural wonders of the world. The canyon is about 277 miles long, 18 miles wide, and in some places over a mile deep. It is part of the Grand Canyon National Park, which was established in 1919 and is a UNESCO World Heritage Site.