The San Juan National Historic Site preserves the history of the island, told through Castillo San Felipe del Morro, Castillo San Cristóbal, Fuerte San Juan de la Cruz (El Cañuelo), the San Juan Gate, and most of the city walls. For centuries, countries fought for control of this Caribbean island because of its strategic location. Be inspired by the stories and the beauty of the architecture and the ingenuity of design of this UNESCO World Heritage Site.