Phoenix is the capital and most populous city of the U.S. state of Arizona. With 1,626,078 people (as of 2017),[2] it is also the fifth most populous city in the United States, the most populous American state capital, and the only state capital with a population of more than one million residents.Phoenix is the anchor of the Phoenix metropolitan area, also known as the Valley of the Sun, which in turn is a part of the Salt River Valley. The metropolitan area is the 11th largest by population in the United States, with approximately 4.73 million people as of 2017.[3] In addition, the city is the largest capital in the United States by population.The city is located in the northeastern reaches of the Sonoran Desert and is the southwesternmost city in the continental United States. Phoenix was incorporated as a city in 1881, after being founded in 1867 near the Salt River's confluence with the Gila River.The city has a hot desert climate, with long, hot summers and mild winters. July is the hottest month, with an average high of 107 °F (42 °C). Temperatures above 100 °F (38 °C) occur an average of 86 days per year, and temperatures above 110 °F (43 °C) occur an average of 25 days per year.There are several popular tourist attractions in Phoenix, such as the Phoenix Zoo, the Desert Botanical Garden, and Taliesin West. Other popular attractions include Camelback Mountain, Papago Park, the Heard Museum, and Chase Field.Downtown Phoenix has a variety of parking options, including metered street parking, surface lots, and garages. Many of the surface lots and garages offer discounts for online reservations.