Photo credits
Ruta 503's own photographs are its own. The ones listed here come from Wikimedia Commons under Creative Commons licenses and are shown resized and with color adjustments.
| Photo | Author | License | Source |
|---|---|---|---|
| Joya de Cerén | Mariordo | CC BY-SA 3.0 | Wikimedia Commons |
| Tazumal (Chalchuapa) | ARamirez69 | CC BY-SA 3.0 | Wikimedia Commons |
| Lake Ilopango | Mateosal | CC BY-SA | Wikimedia Commons |
| Los Volcanes | JMRAFFi | CC BY 4.0 | Wikimedia Commons |
| Suchitoto | Daniel Chavez Castro | CC BY 3.0 | Wikimedia Commons |