Situated at exactly 5,280 feet above sea level, Denver is the uncontested Mile-High city, jam-packed with all the outdoor thrills one would expect of a mountain-based destination. Still, there are plenty of cities around the world that offer high-altitude adventures, some at elevations that far surpass Denver. If you’re looking for the natural buzz that comes from hanging out at high altitude locales, the following destinations might just be for you.