Central Green, Public park in Zhangjiawan, China.

Central Green Forest Park covers about 11.2 square kilometres in Tongzhou, roughly twice the size of the Olympic Park. Its 5.5-kilometre star-shaped loop has an 8-metre cycling lane and a 3-metre walking path lined with ash and ginkgo trees. A 78-hectare core of former polluted land is closed for near-natural reforestation.

The park opened in 2020 as a new green space within Beijing's administrative center district. Its creation was part of urban development efforts to improve the quality of life in this area.

The park serves as a gathering place where locals spend their days walking, jogging, and meeting with friends in the open air. Community events and seasonal celebrations here bring neighbors together regularly.

The park can be reached from multiple entrances and is well-served by public transportation connections nearby. The pathways are clearly marked for different activities and offer plenty of space for walking or cycling.

The park keeps the gate, chimney and some workshops of the former Dongfang Chemical Plant, which produced acrylic acid and esters until it closed in 2012; the star-shaped ring road is 5.5 km long, with an 8 m cycling lane and a 3 m walking path lined with ash and ginkgo.