 The expansion turned the Exton Square Mall into the first regional mall in Chester County.In 2003, The Rouse Company sold the Exton Square Mall along with the Cherry Hill Mall, Echelon Mall, Moorestown Mall, Plymouth Meeting Mall, and The Gallery at Market East to PREIT for $548 million.In 2005, Federated Department Stores purchased May Department Stores, the owners of Strawbridge's, and planned to convert several Strawbridge's locations to Macy's, including the store at Exton Square Mall.