Sonora is a state in northwestern Mexico with an area of 182,052 square kilometers, making it around the size of Syria. It is surrounded by the states of Baja California and the Sea of Cortez to the west, Chihuahua to the east, Sinaloa to the south, and Arizona to the north. The capital is Hermosillo, other important cities include Ciudad ObregÃ³n and Nogales. Sonora's western shores are washed by the Sea of Cortez (or Gulf of California, as it is also known), which is connected to the Pacific Ocean further south. Sonora is thus linked to the so-called "Pacific Rim," which offers ample opportunities through the port of Guaymas for economic development as well as many challenges and opportunities for sustainable use of its natural resources. The Sonoran coastline is 1,208 km long.