The oldest district in Taipei, Wan Hua was once a thriving port. Located on the Dan Shui River, this area was built up by merchants from Mainland China. Religion played a major role in the lives of these Chinese settlers who constructed numerous temples in the area. Present day temples in the Wan Hua District include the Lungshan Temple (Taipei's oldest temple), Chingshui Zen Temple, and Ching Shan Temple. Other main attractions in this area are the popular Xi Men Ding shopping and movie district, Hua Xi Street (better known as Snake Alley), and Taipei's Youth Park.