“El Yunque” is Puerto Rico’s wonder of the world Rainforest. You can hike it, or you can do a little walk, take a short cut and go straight to the waterfall if hiking is not your thing but you want some water fun. You can have access maps for free on the provided website if you want to venture on your own, or you can check TripAdvisor for paid guides.
Puerto Rico has THREE Bioluminiscent Bays. There's La Parguera in Lajas, then Laguna Grande in Fajardo, and lastly but most important, Mosquito Bay in Vieques who was recognized in 2006 by Guinness World Records as the brightest bioluminescent bay in the world! It's a great adventure to kayak it! You can book an adventure using TripAdvisor or Expedia.
If you want to go fishing, here are great options. As a reminder, you dont need a fishing license to fish in Puerto Rico.
Castillo San Felipe del Morro, AKA "El Morro" is massive 16th-century citadel located in Old San Juan, Puerto Rico. This UNESCO World Heritage site is a premier tourist attraction known for its strategic location at the entrance of San Juan Bay, itssix levels of defenses, and its role in defending the Spanish Empire.