Grand Canyon National Park preserves one of the world's most magnificent natural wonders, preserved as a UNESCO World Heritage Site and considered to be one of the Seven Wonders of the Natural World. The park, which was established in 1919 as the United States' 15th national park facility, spans 1.2 million acres and is one of the most-visited national parks in the county. Gorgeous rock layers formed in Precambrian times have been carved by the flow of the Colorado River, showcasing stunning red, brown, and pink layers today that make for unparalleled photo opportunities. Visitors can stay in luxury at accommodations along the park's South Rim, which is home to family-friendly tourist attractions like the Grand Canyon IMAX Theatre and the Yavapai Geology Museum. On the canyon's North Rim, secluded lodges and campgrounds offer convenient access to overlook points like Mather Point and the Yavapai Observation Station.