Siesta Beach is known as one of the most beautiful beaches anywhere in the world. Unlike beaches elsewhere that are made up mostly of pulverized coral, Siesta Beach's sand is 99% quartz. Even on the hottest days, the sand is so reflective that it feels cool underfoot. It's estimated that the sand on Siesta Beach is millions of years old, having its origin in the Appalachians and flowing down the rivers from the mountains until it eventually was deposited on the shores of Siesta Key. Siesta Key Beach has many awards it has earned, which include:
* “The whitest and finest sand in the world” (The Great International Beach Challenge, 1987),
* “The Best Sand Beach in America” (The Travel Channel, 2004),
* “The Best Beach in America” (Dr. Beach, 2011, 2017).