Weequahic Park is a park located in the South Ward of Newark, New Jersey, USA, designed by the Olmsted Brothers firm,. The park is 311.33 acres including an 80-acre lake. The Weequahic Park Historic District was added to the National Register of Historic Places on February 12, 2003, for its significance in architecture, community planning, and landscape a…Weequahic Park is a park located in the South Ward of Newark, New Jersey, USA, designed by the Olmsted Brothers firm,. The park is 311.33 acres including an 80-acre lake. The Weequahic Park Historic District was added to the National Register of Historic Places on February 12, 2003, for its significance in architecture, community planning, and landscape architecture.