 Subsequently, many of the original town buildings, including most of its health centres, the Staple Tye shopping centre and many industrial units have been rebuilt.Gibberd's original town hall, a landmark in the town, has been demolished and replaced by a new civic centre and The Water Gardens shopping area.Since becoming a new town, Harlow has undergone several stages of expansion, the first of which was the "mini expansion" that was created by the building of the Sumners and Katherines estates in the mid-to-late seventies to the west of the existing town.