Cabezas de San Juan Nature Reserve is a pristine coastal reserve in Puerto Rico known for its diverse ecosystems including mangroves, coral reefs, and dry forests, offering exceptional outdoor and wildlife viewing experiences.
Situated on the northeastern tip of Puerto Rico near Fajardo, the Cabezas de San Juan Nature Reserve serves as a vital protected area preserving a remarkable variety of ecosystems including coastal mangroves, coral reefs, dry forests, lagoons, and seagrass beds. Managed by the Puertorriquean Department of Natural and Environmental Resources, the reserve spans approximately 316 acres and is renowned for its rich biodiversity. It provides habitat for numerous endangered and endemic species such as the yellow-shouldered blackbird and various marine turtles. The reserve is anchored by the historic Fajardo Lighthouse (El Faro de Las Cabezas de San Juan), which adds cultural and historical significance to the natural landscape. Visitors to the reserve can enjoy guided eco-tours that highlight the complexity of the tropical ecosystems, including boardwalk trails through mangroves and dry forest zones, wildlife spotting (especially bird watching), and opportunities for snorkeling near vibrant coral reefs. The reserve is also part of the Caño Martín Peña Biosphere Reserve and plays a critical role in regional conservation efforts. Its location on the coast offers spectacular views of both the Atlantic Ocean and the nearby islands of Culebra and Vieques, making it a favorite spot for photographers and nature enthusiasts. Educational programs and interpretive centers provide valuable insights into the ecological importance of this unique natural area. Cabezas de San Juan remains a crucial sanctuary for both marine and terrestrial species and a peaceful getaway for those seeking unspoiled nature near Puerto Rico’s populated areas.
El Faro de Las Cabezas de San Juan - historic lighthouse and observation tower
Diverse coastal ecosystems including mangroves, coral reefs, lagoons, and dry forest
Vibrant birdwatching hotspot with endemic and endangered species
Guided eco-tours showcasing tropical ecology and conservation efforts
A historic 1882 lighthouse offering panoramic views of the Atlantic coastline and nearby islands, serving as an iconic landmark within the reserve.
Extensive mangrove ecosystems that function as important nurseries for marine life and provide critical coastal protection.
Vibrant coral reefs adjacent to the reserve support diverse marine species and provide excellent snorkeling opportunities.