contains luxury boxes (renovated in 2004). The Estadio Nacional currently has a natural bermudagrass pitch, reinstalled as part of redevelopments completed in 2011. Previously, the FPF had installed artificial turf in the stadium for the 2005 FIFA U-17 World Championship, making it the only national stadium in CONMEBOL with such a turf. Despite the synthetic ground's rating of "FIFA Star II", the highest certification granted to artificial pitches, players accused the turf of causing them injuries, such as burns and bruises. Peru sometimes play home matches at other venues. Outside the desert-like coast region of Lima, the thin atmosphere at the high-altitude Estadio Garcilaso de la Vega in Cusco has been described as providing strategic advantages for Peru against certain visiting teams. Other common alternate venues for the national team include two other grounds in the Peruvian capital—Alianza's Estadio Alejandro Villanueva and Universitario's Estadio Monumental. The national team's training grounds are located within the Villa Deportiva Nacional (VIDENA) sports complex in Lima's San Luis district. Since 1981, the complex is managed by the Peruvian Institute of Sport (IPD). In 2017, following Peru's qualification for the Russia 2018 World Cup finals, the Peruvian Football Federation announced the creation of a new complex, the Center of National Teams, in Lima's Chaclacayo district. The new complex will contain six training grounds for both the male and the female squads, including the senior and the youth sides. Supporters Football has been the most popular sport in Peru since the early 20th century. Originally largely exclusive to Lima's Anglophile elite and expatriates, and secluded from the rest of the city, football became an integral part of wider popular culture during the 1900s and 1910s. Over the following decades, Augusto Leguía's government institutionalised the sport into a national pastime by promoting and organising its development. Consequently, the national football team became an important element of Peru's national identity. According to the historian Carlos Aguirre, nationalist fervor spiked during the qualification phase for the 1970 World Cup finals, because the revolutionary government of General Juan Velasco Alvarado tied the national team's success with the alleged cultural, social, and psychological changes spurred by the country's new political project. Peruvian football fans are known for their distinctive cheer ¡Arriba Perú! ("Onward Peru!"), unabating popular chant ¡Vamos peruanos! (Let's go Peruvians!), as well as for their use of traditional Peruvian música criolla to express support, both at national team games