The city and municipality of Oaxaca de Juárez, or simply Oaxaca, is the capital and largest city of the eponymous Mexican state. It is located in the Centro District in the Central Valleys region of the state, on the foothills of the Sierra Madre at the base of the Cerro del Fortín extending to the banks of the Atoyac River. The city relies heavily on tourism, which is based on its large number of colonial-era structures as well as the native Zapotec and Mixtec cultures and archeological sites. The city, together with the archeological site of Monte Albán, was named a World Heritage Site in 1987. It is also the home of the month-long cultural festival called the "Guelaguetza", which features Oaxacan dance from the seven regions, music and a beauty pageant for indigenous women.