Las Cabezas de San Juan is a wonderful place to observe a number of ecosystems. The nature reserve is comprised of 434 acres preserved by the Conservation Trust of Puerto Rico; it is made up of mangroves, the bioluminescent lagoon of Laguna Grande, the historic lighthouse Faro De Las Cabezas De San Juan, a dry forest, and Playa Lirios, a beautiful rocky beach lined by a reef. At the top of the lighthouse, you’ll enjoy magnificent views of the northeastern tip of Puerto Rico. Reserve the thematic tour in advance by calling the Conservation Trust at 787-722-5834 / weekends 787-860-2560. A suggested itinerary is to tour the reserve in the afternoon, have dinner, and then head to a tour of Laguna Grande in the evening.