Just north of Beijing, between the Great Wall and Yanqi Lake, the Xingfa Cement Plant once fueled China’s construction boom, operating for over two decades before its 2015 closure under the National Air Quality Action Plan. Today, an adjacent quarry that once provided raw materials has been remediated as a 107.5-hectare terraced park that anchors an accompanying 17-acre research campus on the site of the plant.
Where a single willow tree once stood, the valley now supports a vast, layered network of emergent plant communities selected to adapt in rocky, alkaline soils. Native arborvitae stabilize slopes and retain moisture through summer droughts. Legume-producing species enrich the thin soil, while seasonal stands of smoke tree, mulberry, and elm provide canopy and seasonal color. Invasive plants introduced during the site’s industrial era have been cleared and replaced with species that restore soil conditions. On the southwestern end of the site, a seasonal pond has been added to retain stormwater runoff and reduce erosion across the exposed quarry floor.
Paving, walls, and trail edging were constructed using recycled stone and shale. Salvaged conveyor housings and other industrial remnants were embedded into the landscape along the “Trail of Memory,” a pedestrian spine linking the two quarry pits that pays homage to the site’s industrial past. Climbing up a nearby hilltop to an overlook pavilion, a 1.2-kilometer hiking trail provides panoramic views of the surrounding Yan Mountains.
Polliwog Park
Originally built in the 1970s, Polliwog Park is a high-use neighborhood amenity that provides active recreation and play facilities to local families. The original playground was replaced in 2003 but required a full update in 2020 to account for routine flooding. SWA’s design allows the park to remain an active community feature year-round.
In addition ...
Nickerson Gardens Playground
Originally designed in 1955 by architect Paul Revere Williams, Nickerson Gardens is a 1,066-unit apartment complex in Watts, South Los Angeles — the largest social housing project west of the Mississippi. Core to Williams’ vision was an emphasis on shared open space, but its central playground, neglected for years, fell into a state of disrepair. In collaborat...
Fernwood Avenue Park
The Fernwood Avenue Park represents a significant opportunity for the city to enhance the water quality and availability of groundwater for residents, while also offering public amenities. Equipped with four detention basins that capture water onsite and from the street, the project plays an important role in the community as a stormwater infiltration site. Th...
Terry Hershey Park
The park design includes a one-mile hike and bike trail system, a pedestrian underpass linking the park to an existing trail system, bridges over the creek, and automobile parking. Gabions were used as an environmentally friendly means of slope retention in a floodway and as a tool for creating places for people to enjoy the wooded environment. Sinuous banks a...