3. Vieques
Another of Puerto Rico’s islands famed for natural beauty, Vieques is known for its bioluminescent Mosquito Bay where tiny organisms light up when disturbed at night—leaving wakes from kayaks or small boats a brilliant neon blue. Paddle boarding, snorkeling or relaxing on a secluded black-sand beach are other popular activities here. Visit this Puerto Rican island by plane from San Juan or ferry from Fajardo.
