Angel’s Landing in Zion National Park is iconic for being one of the most unique and dangerous hikes in the USA. To get to the top you must scramble along a narrow ridge of rock over one-thousand feet above the canyon floor. In parts, the trail is just a couple feet wide with a sheer drop on either side. That being said, I think this trail looks scarier in pictures and videos than it actually is in person. If you are reasonably fit, have the right gear, and can manage your fear, you can do this trail.
With an elevation gain of over 2000 feet, the hike to Colchuck lake is challenging. But the reward at the top is a picturesque lake with dazzling blue green water and views over Dragontail and Colchuck Peak mountains.
Klahhane Ridge in Olympic National Park boasts panoramic views over snow-capped mountains. The hike to Klahhane Ridge via the Switchback Trail is only 3.4 miles roundtrip but rapidly gains elevation on a series of switchbacks that take you right up the mountain face.