This 4-level Neiman Marcus became the first operational store at the GALLERIA POST OAK site, in January 1969.
Drawing from http://departmentstoremuseum.blogspot.com
A fully-enclosed, tri-level mall was dedicated in late 1970. At this time, GALLERIA POST OAK encompassed 600,000 leasable square feet, with an initial sixty stores and services. The complex would not be fully-leased until 1973.