To the southeast of Wanning is Dazhou Island, 15 kilometers away from Wanning County. Covering an area of 4.36 square kilometers, Dazhou Island is made up of two smaller islands and three peaks, the highest of which is 289.3 meters high.

Dazhou Island is China's only production base for bird's nest, a Chinese delicacy known for its health benefits. Many varieties of flora and fauna reside on Dazhou Island; with its amazingly clear waters and beautiful mountain scenery, Dazhou Island is a wonderful place to visit.