There is no doubt as to why Siesta Beach has been ranked as one of the best beaches in the world. It has the finest, whitest sand. During intense Florida heat, the sand is still cool to the feet. Sand is made of 99% quartz. This is by far, our favorite beach among all of Florida. The waters were warm during summer and of such beautiful colors in layers of blue and green. Everytime, we go to the gulf, we always had to visit this beach. One has to go early as parking easily fills up. Say earlier than 9:00 am would be good.