2. Meteor Crater

The Arizona landscape lends itself to extremes. Meteor Crater, near Winslow, is one of the best-preserved meteor strike sites in the world. Viewed from its surroundings, the ragged edges of the crater stretch an impressive 150 feet toward the sky. But when viewed from above or from within, the monumental dimensions of the displacement are revealed. The crater is more than 550 feet deep and measures nearly one mile across. Was this the meteor strike that killed off the dinosaurs? Maybe not, but it definitely moved the world, and left its mark forever.