1893 Brisbane flood (and again in 1897), major floods wiped out many shops in South Brisbane, and owners in that area decided to move and set up operations north of the river in an area free of flooding. The area they chose was Fortitude Valley. By that time Brisbane's horse-drawn tram system already centred on Fortitude Valley, making it the logical choice to establish a shopping precinct. Fortitude Valley was also strongly advocated as the location of a new town hall in what became known as "the battle of the sites". Brisbane Town Council already purchased a piece of land in Fortitude Valley and supporters of the Fortitude Valley site pointed out that it would allow stronger foundations compared to the swampy site proposed at Adelaide Street in the existing commercial district. However, a petition was raised in support of the Adelaide Street site and with the support of Charles Moffatt Jenkinson, the mayor of Brisbane in 1914, it was chosen over the Fortitude Valley site. Jenkinson committed the council to that decision by selling the site in Fortitude Valley to the Catholic Church for the construction of the Holy Name Cathedral (a project that, although commenced, made little progress and was eventually abandoned). From the early 1900s through to the 1960s, the thriving shopping precinct was dominated by McWhirters, Beirne's and, later, Overells' department stores. The Overells Building was completed in 1907. They were ultimately bought out by the Myer, David Jones and Waltons chains respectively with Overells being bought by Walton in 1956. Woolworths and Coles supermarkets and a host of smaller shops also flourished in the precinct during this period. Owing to its proximity to the central business district and the close concentration of public transport in the area, the Valley became the largest non-CBD shopping precinct in Australia through the 1950s and 1960s. Between 1923 and 1948 mixed gender opportunity classes for the intellectually impaired and handicapped were conducted at the boys' school. In 1951 the Fortitude Valley Opportunity School was approved and operated as a separate entity in its own right shortly afterwards. The school closed in 1961. The rise of suburban shopping centres and the closure of the tram network in 1969 sounded the death knell for Fortitude Valley, with a gradual decrease in customers. David Jones closed its Valley store in the 1970s and Myer closed its doors in the early 1990s. In