Below a scenic turnout along the Koko Head shoreline, this oft-photographed lava tube sucks the ocean in and spits it out. Don't get too close, as conditions can get dangerous. Look to your right to see the tiny beach below that was used to film the wave-washed love scene in From Here to Eternity. In winter this is a good spot to watch whales at play. Offshore, the islands of Molokai and Lanai call like distant sirens, and every once in a while Maui is visible in blue silhouette. Take your valuables with you and lock your car, because this scenic location is overrun with tourists and therefore a hot spot for petty thieves.