1 Best Sight in North Cascades National Park, Washington

It's a 3½-mile bike ride or shuttle bus ride to popular Rainbow Falls in Stehekin. The quarter-mile round-trip Rainbow Falls Mist Trail takes you up some stairs (step carefully; it can get slippery from dampness) to a landing platform for a closer view of the 312-foot falls. When the sun hits the mist just right, you can see the rainbow—hence the name.