Officially dedicated in 1972 as the largest shopping mall in -or around- Buffalo, the single-level complex housed over 900,000 leasable square feet. In addition to its four major department stores, it housed medium-sized Jenss and Woolworth operations. There were also freestanding Penney's and Sears auto centers.

A renovation -its first- was given EASTERN HILLS MALL in 1986-1987. In this rendering we see the prospective Treats Food Court.
Drawing from The Buffalo News

In a circa-1987 site plan, we see that the original Hengerer's store is now operating as a Rochester-based Sibley's. The new Treats Food Court is indicated in gray. This small addition has been the only physical expansion ever built at the 900,000 square foot buying behemoth.