Sun Moon Lake is the largest body of water in Taiwan as well as a tourist attraction.

Situated in Yuchi, Nantou, the area around the Sun Moon Lake is home to the Thao tribe, one of aboriginal tribes in Taiwan.Sun Moon Lake surrounds a tiny island called Lalu.The east side of the lake resembles a sun while the west side resembles a moon, hence the name.

Sun Moon Lake is located 748 m (2,454 ft) above sea level. It is 27 m (89 ft) deep and has a surface area of approximately 7.93 km2 (3.06 sq mi). The area surrounding the lake has many trails for hiking.While swimming in Sun Moon Lake is usually not permitted, there is an annual 3-km race called the Swimming Carnival of Sun Moon Lake held around theMid-Autumn Festival each year.In recent years the participants have numbered in the tens of thousands.

While swimming in Sun Moon Lake is usually not permitted, there is an annual 3-km race called the Swimming Carnival of Sun Moon Lake held around theMid-Autumn Festival each year.[4][5] In recent years the participants have numbered in the tens of thousands. Other festivities held at the same time include fireworks, laser shows, and concerts.