Dujiangyan, Irrigation system in Sichuan, China
Dujiangyan is an ancient irrigation system in Dujiangyan City, Sichuan, China.
Originally constructed around 256 BC by the State of Qin, it's still in use today.
The system is revered as a demonstration of ancient Chinese ingenuity and is a UNESCO World Heritage Site.
It's a popular tourist destination, easily accessible from Chengdu.
Unlike most irrigation systems, Dujiangyan does not use a dam, making it environmentally friendly.
Location: Dujiangyan City
Source: Wikimedia