Pasadena is the queen of the San Gabriel Valley, sitting at the foot of the San Gabriel Mountains next to a dry riverbed known as the Arroyo Seco. Some Angelenos perceive the city merely as another LA suburb; however, it is closer to Downtown Los Angeles than many actual suburbs. Pasadena stands as a vibrant city in its own right, having become the second incorporated city in Southern California after Los Angeles in 1886. Consequently, it is now the 6th largest city in Los Angeles County, with an estimated population of around 145,000 in 2005. Its valley location provides a climate approximately 20 degrees warmer than beach communities during summer months.