A low morning sun cuts through mist above turquoise water as your guide leads the group onto a network of wooden boardwalks. The lakes don’t sit still; they move—bubbling, spilling and daring you to keep pace. From here you can hear the Great Waterfall long before you see it, a white ribbon folding into the lower basin while smaller cascades chatter along travertine steps. The park organizes motion—boats that slide across mirror-smooth basins, an electric launch that crosses the widest lake, and a panoramic train that returns you to the trailhead when your legs are ready to stop.