This distinctive supermarket, which anchors the Parkway Plaza, was the second Toronto location of New Jersey grocery chain Grand Union. The shopping centre itself reflected the growth of suburban Scarborough. The store was designed in the Modern style by Bregman and Hamann Architects for the Cadillac Development Corporation. It featured an arched roof, which, upon completion, was described as the largest of its type in Canada. Inside the building, the open plan and light-filled interior demonstrated changing retail design attitudes in the post-Second World War period.
A year after Grand Union opened here, Steinberg Supermarkets of Montreal acquired and renamed the New Jersey company's Canadian stores; the ownership and name of this location have since changed several times. In 2009, the supermarket became the first in Toronto to be included on the Inventory of Heritage Properties.