at Playa Sucia on Cabo Rojo, in the very southwest corner of puerto rico.

this might be the most perfect spot in the world, if you can brave the "bone-rattling" dirt road to the tip of the cape.  the beach is on a wildlife reserve, so there are lots of cool birds along the way, and manatees in the bay if you're lucky (we did not see manatees, but i felt pretty lucky anyway).

if someone walks by with an unlikely ice cream cart, order the coconut and be amazed.