You'll find the stunning Horsetail Falls right off the Historic Columbia River Highway, making it one of the most accessible and beautiful stops in the Gorge. The waterfall plunges 176 feet just steps from the road, so you can admire it without a long walk. For a bit more adventure, take the short but rewarding 0.8-mile round-trip hike up to Ponytail Falls, where you can actually walk behind the cascading water for a truly memorable experience.