What is the most famous natural wonder in the United States?

The most famous natural wonder in the United States is the Grand Canyon. Located in Arizona, the Grand Canyon is a massive geological formation carved by the Colorado River. It spans 277 miles in length, up to 18 miles in width, and over a mile deep. The stunning layers of rock in the canyon provide a vivid display of Earth’s geological history. The Grand Canyon is one of the most visited national parks in the U.S. and is recognized as a UNESCO World Heritage site, drawing visitors from around the world to experience its breathtaking beauty.