The Grand Canyon is Arizona's most well-known natural beauty, and for good reason: between its immense size and breathtaking views, this natural phenomenon is a must-see — despite the crowds.

The canyon stretches on for 277 river miles and spans 18 miles from side to side. While the South Rim is open all year round, the North Rim is open to visitors on a more seasonal basis. You can either stop for an hour to get some photos, or venture into the canyon for a river or camping trip.