Which is the most accessible part of Grand Canyon and open all year?

The South Rim of the Grand Canyon is the most accessible part of the canyon and is open all year. It is located in Arizona and is home to some of the most iconic views of the canyon, including Mather Point, Yavapai Point, and Grandview Point. The South Rim is also home to a variety of visitor facilities, including the Grand Canyon Visitor Center, the IMAX Theater, and the Kolb Studio. The South Rim is accessible by road, and there is a shuttle bus service that runs along the rim.