Multnomah Falls - Historic Columbia River Highway - Multnomah Falls, at 620 feet, is the second highest year-round waterfall in the United States. Nearly two million visitors a year come to see this ancient waterfall making it Oregon's number one public destination. The falls can be visited from Interstate 84, or the Historic Columbia River Highway. Multnomha Falls-stitched - prints best a 8x20 or 4x10 with minor adjustment (preferably from the top).