One of the best things to do when in Kauai is to explore the Na Pali coast. There are many ways to check it out, but one that I highly recommend is a sunset cruise. The cruise itself is fairly intense as the waves along the coast are no joke. However, a little bumpiness is well worth what you are taken to.
I took this shot while cruising back to port. This part of the coast is often times called the Na Pali Cathedral as the sharp edges of the mountain give the illusion of flying buttress and other cathedral architectural components.
Do you see the cathedral?