1941 Map of San Sebastian

About this map

San Sebastian and Lares anchor this mid-century view of the interior highlands, where the rugged topography of Puerto Rico's northwest karst region is defined by deep river valleys and limestone ridges. The northern reaches are dominated by the Lago Guajataca reservoir and the winding Rio Guajataca, while the southern landscape drops into the drainage basin of the Rio Anasco. This era of development is visible in the network of primary and secondary roads connecting barrios like Piedras Blancas, Hoya Mala, and Guajataca. Cultural landmarks include the Iglesia Santa Ana, the Iglesia Presbiteriana, and the Acueducto de San Sebastian, reflecting the growing infrastructure and community life of the 1930s and 40s. The map also delineates the complex municipal boundaries where San Sebastian meets Lares and Las Marias.