Wailua Falls is the must-see waterfall to visit on the garden island of Kauai. Mainly, because it is the most easily accessible waterfall. Most of the many waterfalls on Kauai are either only accessible by helicopter or on private land (a big bummer), but this one in Wailua River State Park is very easy to see, well marked, and has a developed viewpoint.
Wailua Falls is a spectacular 80 ft. high waterfall. In normal flows, it is really quite pretty, dropping in 3 separate segments. In high flows, as shown above, it is a single massive falls. Wailua Falls is the waterfall that used to be shown on the old TV show, Fantasy Island. It is also where in ancient times men used to dive off (over the falls) to prove their worthiness. The best time to visit Wailua Falls is very early in the morning before all the crowds come here, as it is a very popular tourist stop. But if you are here alone, before anyone else, then it is much more pleasurable.
It is possible to get down to the base of Wailua Falls. There is a turnout about a quarter mile before the main viewpoin. A sign there indicates not to proceed due to dangerous conditions. But there is a steep trail down to the bottom, and it is not illegal to go down there.