Viñales Valley (Spanish: Valle de Viñales) is a karstic depression in Cuba. The valley has an area of 132 km² (51 sq mi) and is located in the Sierra de los Órganos mountains (part of Guaniguanico range), just north of Viñales in the Pinar del Río Province. In 1999, the valley was inscribed as a UNESCO World Heritage Site as a natural and cultural landscape because of its use of traditional tobacco-growing techniques.