Bar del Parque La Ruina / Tamen Arquitectura. Image © Alexander Potiomki
Sonora is a state located in the northwestern region of Mexico geographically bordering the states of Arizona in the United States, Chihuahua, Sinaloa and facing the Sea of Cortez. It has 179,503 km² of surface being the second least extensive state in the country. Its capital and most populated city is Hermosillo. However, other important localities are Ciudad Obregón, Guaymas, Nogales, Agua Prieta and Navojoa.