Caño Martín Peña

Caño Martín Peña is a popular marshy waterway and surrounding neighborhood in San Juan, Puerto Rico. Historically a natural estuary, it became increasingly industrialized and developed over time, leading to severe pollution, flooding, and unsafe living conditions for residents. Efforts have been underway to restore the environment, improve sanitation, and develop sustainable housing and infrastructure. The area is known for its community activism and ongoing projects aimed at transforming it into a healthier, more resilient urban space while preserving its cultural significance.