The secluded beach at Polihale State Park in Kauai, Hawaii is one of my favorites. This location is great for photographing the sand and cliffs in the warm light of the setting sun.
While the sand on a beach may all appear the same, you can often find something different to work into your composition. Here, I found little channels created by erosion. The channels were straight, but by shooting the contour from a close angle, they become oft-desired curves in my composition. The curves separate this photo from many others I didn't find very interesting.
This location also has full view of the setting sun, but I needed more time to explore the area to find a foreground other than the basic (though still beautiful) sun-into-water composition.