View looking north toward the Las Cabezas de San Juan Nature Reserve from Fajardo, Puerto Rico.
Clarence Holmes/age fotostock
Puerto Rico’s nature conservancy, called Para la Naturaleza, recovers land and property that have historical and environmental significance, then restores and reopens them as spaces for public access and education. One such place is this nature reserve, Cabezas de San Juan, which features seven different ecosystems, including a mangrove that visitors can explore and learn about on a guided tour. Reservations are essential.