Pictured to your right is the Grand Canyon Sky Walk, which resembles a huge magnet jutting out from the edge of a cliff. Visitors are invited to dizzy themselves peering over the railing into the abyss.
The Grand Canyon, a steep gorge carved by the Colorado River over many millions of years, is located in Grand Canyon National Park in northwestern Arizona. Nearby cities include Flagstaff, Williams and Sedona. They're all located less than a hundred miles south of the canyon's east end.
The canyon is about 277 miles long, and ranges in width from a quarter mile in some places to about fifteen miles in others. It stretches from the southeastern Nevada border (east of Las Vegas) to north central Arizona (north of Flagstaff). Some parts of the Grand Canyon are more than a mile deep.
The Grand Canyon receives millions of visitors each year, and is usually listed as one of the 7 natural wonders of the world.