Take a tour of Meteor Crater in Arizona, United States – part of the World’s Greatest Attractions series by GeoBeats. Out in the Arizona desert is the site of a cataclysmic event. Meteor Crater is the site of an explosion bigger than that of an atomic bomb. The meteor is estimated to have hit here some 50,000 years ago, but its effects still remain. The massive crater is nearly a mile across and over 500 feet deep. Meteor Crater is vaguely square-shaped and is so large that it's visible from space. The site features hiking trails and an educational center with a wide screen movie theater.