Tourism is concentrated mostly in the summer (December to March), and mainly in the coastal beach towns. Arica, Iquique, Antofagasta, La Serena and Coquimbo are the main summer centres in the north, and Pucón on the shores of Lake Villarrica is the main centre in the south. Because of its proximity to Santiago, the coast of the Valparaíso Region, with its many beach resorts, receives the largest number of tourists. Viña del Mar, Valparaíso's northern affluent neighbor, is popular because of its beaches, casino, and its annual song festival, the most important musical event in Latin America. Pichilemu in the O'Higgins Region is widely known as South America's "best surfing spot," according to Fodor's.