The decision to build Clyde Dam and use Cromwell as the accommodation base brought many changes to the town. Approximately one-third of the town was rebuilt on higher ground. The changes included the doubling of the residential area, relocation of the old town centre (now called "Old Cromwell Town"), upgrading of services, and the provision of modern educational and sports facilities, and a new bridge. The relocated town centre, or "The Mall," now houses the main retail, service and civic buildings in Cromwell. Several of the old buildings of the town which escaped the flooding have been retained as a historic precinct close to the shore of the Kawarau.