The Grand Canal Park is a National Park located where the Grand Canal enters Beijing. It was built in 2009 and opened in 2010. Since it is on the outskirts of the city, it is not often frequented by tourists but is 100% worth visiting. The Grand Canal is one of the oldest man-made structures in the world and was connected to Beijing during the Yuan and Ming Dynasties. The park consists of cycling and walking paths on both sides of the river and is kept in pristine condition. Owing to the fact that the Grand Canal is now used to bring drinking water to Beijing, the water quality in the river is superb, and there is a plethora of fish and water birds living alongside the waterway. You can access the Grand Canal Park from Bei Yun He Xi (北运河西) subway station, Bei Yun He Dong (北运河东) subway station, or Hao Jia Fu (郝家府) subway station.