guarantees. Jordan Marsh was always known for implementing new technology as well, one of the first stores to feature electrical lights, glass showcases, telephones, and elevators. It also installed pneumatic tubes that delivered cash and credit information to individual departments. In 1935, Boston's Jordan Marsh became one of the founders of New York City-based Allied Stores Corporation, a successor to Hahn Department Stores, Inc., a holding company founded in 1928. Expansion After World War II, the management of Jordan Marsh announced that it would build a new store in downtown Boston. Jordan's five older buildings would give way to a new building that would take up a full city block. Covering an area larger than Harvard Stadium, it would have two stories under ground; another 14 would rise into the air. It would have all the latest technology, including air conditioning, automatic doorways, block-long show windows, and radiant-heated sidewalks. After the addition of the "new building" in 1949, the Jordan Marsh Complex was split into four distinct units; the 1949 new store, the original main store, annex, and bristol building. The Boston Redevelopment Authority estimated the complex's total retail space at , which made it the largest retail venue in Boston. At the same time, the company began moving, along with its customers, into the suburbs. Jordan's constructed its first branch stores in older suburban communities in the 1940s, but by 1966 the branch stores accounted for half of all department store sales. The shopping mall Shopper's World opened in Framingham, Massachusetts on October 4, 1951, making it one of the earliest suburban shopping malls in the country. Jordan Marsh stood at the southern end as the sole anchor. It was the first mall-styled Jordan Marsh in the country and was unmistakable for its large white dome. The dome was visible from the air and was used on aeronautical charts as a visual reporting point for aircraft approaching Boston's Logan Airport. It was reputed to be the third largest (in diameter) unsupported dome in the world after St. Peter's Basilica in Rome and St. Paul's Cathedral in London. The Shopper's World store quickly became the most recognizable Jordan Marsh outside the flagship store in Boston. In 1956, the first store in Miami, Florida was opened with slogans such as "Florida's high fashion department store" and "the store with the Florida flair". Later, it was divided into a separate division of