Fodor's Expert Review Rainbow Bridge National Monument

The 290-foot red-sandstone arch is the world's largest natural bridge; it can be reached by boat or strenuous hike and can also be viewed by air. A boat tour to the monument ($126) is a great way to see not only the monument but also the enormity of the lake and its incredible, rugged beauty. The lake level is down, however, due to the prolonged drought throughout the region, so expect a 1-mile (or more) hike from the boat dock to the monument. To the Navajos this is a sacred area with deep religious and spiritual significance, so outsiders are asked not to hike underneath the arch itself.