The East Lake City Urban Ecological Park is a 34-acre landscape that serves simultaneously as vital green infrastructure and a vibrant public amenity for Dong Mai, a rapidly expanding village southwest of Hanoi, Vietnam. A large freshwater lake, planted with native vegetation, is encircled by pedestrian paths woven with moments for retail, recreation, and cultural engagement. A diagonal pedestrian bridge crosses the lake’s center, creating a subtle “infinity” figure that links the northern and southern shores. Beyond its civic and recreational offerings, the park plays a critical ecological role—its greenspace and lake system help filter groundwater and restore the broader environment after decades of industrial pollution.