Murrumbidgee for irrigation around Leeton, Griffith and the newer Coleambally area south of the Murrumbidgee and Griffith. From the start of the MIA, citrus and other fruit and vegetables were grown in abundance around Griffith. In the 1950s the irrigation area expanded to include large rice farms. Vineyards were established early, and wineries followed, beginning with McWilliam's Wines at Hanwood and Yenda, two villages just outside the city. From its earliest days, the MIA was populated by Italian workers, some of whom were initially employed by Australian farmers to run steamboats on the Murrumbidgee and Murray Rivers. Approximately 60% of today's Griffith population claim Italian background. These include the initial settlement of Italians from the boat crews and other Italians who came out to Australia in the Depression, or from a second wave of immigrant Italians who came to Griffith in the late 1950s and early 1960s. In the 1970s, Griffith was often associated with drug distribution (particularly marijuana) and organised crime, as depicted in 2009 by Underbelly: A Tale of Two Cities. However, Griffith is now associated with good wine and food, primarily as a result of its diverse population, with notable contributions by Italian-Australians. Griffith's multi-ethnic population is now absorbing new national groups, including a significant Sikh Indian community. The city is sister city with the Italian city of Treviso in the Veneto Region. Many Italians in Griffith are from the Veneto Region or the Calabria Region of Italy.The Italian influence expanded the range of fruit and vegetables, and also significantly increased the number of wineries and the range of wines produced by the existing wineries in the region, such as McWilliam's. De Bortoli, Rosetto and other wineries were established by Italian immigrants, and today they are well known around Australia. In recent times they have been joined by one of the country's best known wine labels, Yellow Tail, produced by Casella Family Brands. Casella, DeBortoli, McWilliam's, Warburn and Berton Vineyards are now among the top 20 wine producers in Australia. Griffith is the cathedral city of the Anglican Diocese of Riverina. The foundation stone of the Parish Church of St Alban the Martyr was dedicated in 1954. It was proclaimed as a cathedral in 1984. Heritage listings Griffith has a number of heritage-listed sites, including: Scenic Drive: Hermit's Cave Climate Griffith has a semi-arid climate (BSk) under the Köppen climate classification with hot summers and cool winters,