法门寺
Other important industries include equipment manufacturing and tourism. The manufacturing industry has an annual output of 36.5 billion Yuan, accounting for 44.5% of the city's total. Furthermore, as one of China's four ancient capitals, Xi'an's many cultural sites, including the Terracotta Army, the City Wall of Xi'an, and the Famen Temple, make tourism an important industry as well. In 2010, 52 million domestic tourists visited Xi'an, earning a total income of RMB 40.52 billion. On average, revenue increases by 36.4% per year, and foreign-exchange earnings (530 million in 2009) increase by around 35.8%.