 Porteous, a department store chain based in Portland, Maine opened in 1983 as part of a major mall expansion which doubled the size of the mall.This expansion also added J. C. Penney as well as the first Filene's in the state of Maine.In 1994 the mall underwent a $6.5 million renovation that added a food court as well as Lechmere, Inc. and a larger Dream Machine, a video game and pinball machine arcade.