When visiting Waimea Canyon in northwest Kauai it's almost hard not to notice two-tier Waipo'o Falls dropping some 800ft into the Canyon below. You're first glimpse of the falls is at the Waimea Canyon Overlook, past mile marker 10 on Highway 550. Both the canyon and the falls are spectacular from this lookout (seen below). Further up the road at Pu'u Ka Pele lookout, near mile marker 13, you can get your closest (though partially obstructed) view of the falls from Highway 550. You're still a remarkable distance away from the falls, but it's a beautiful photo opportunity.