The center was announced in 1956 and was to cost $10,000,000. In 1956 and 1958, the project announced that Penney's, Newberry's and Grant's would locate in the Plaza, as well as the first branch of
Rankin's department store of Santa Ana, which was to measure – however, Rankin's never did wind up opening a branch there.
First phase (opened 1956) The center first opened in 1956 with 20 stores and of gross leasable area on , • Thriftimart supermarket • Economart drugstore
Second phase (opened 1959) Phase II added 40 stores and of gross leasable area on an additional . This phase added the anchor stores: • a
J. C. Penney (scaled down from as originally announced) Wineman's operated until acquisition of the chain by
Boston Stores in 1984, when this and other branches were converted to Boston Stores. Additional stores that were added were
McDonald's,
Straw Hat Pizza,
Citizens Savings and Loan,
Bank of America and
See's Candies. The gross leasable area at that time was . ==The Promenade at Garden Grove today==