The Waipio Valley on the Big Island of Hawaii is an amazing sight to behold. Complete with 1000 foot cliffs, a wide-mouth river, waterfalls, ocean, and unique locals, this spot is truly a pleasure.
Most visitors stop at the overlook, but those who make it to the bottom, where this photo was taken, are well rewarded.
The surf here can be fun and there is also camping to be found. Many have claimed that this valley is what ultimately drew them to the islands.