Day trip from San Juan, car required. https://www.tripadvisor.com/Attraction_Review-g147324-d1448148-Reviews-El_Yunque_Rain_Forest-El_Yunque_National_Forest_Puerto_Rico.html One of my FAVORITE places on Earth. Incredible hikes, such a fun and interesting place. Lots to read up on before going, bring mosquito repellent, layers, bathing suit, and lots of water.