Plaza Frontenac is an upscale, two-level, enclosed, regional shopping center in the Frontenac area of metropolitan St. Louis, Missouri. Opened in 1974 and anchored by Saks Fifth Avenue and Neiman Marcus, it has high-end tenants, many of which are unique to the region. Since 2011 Plaza Frontenac has been owned by a joint venture between Canada Pension Plan Investment Board and General Growth Properties.