A district of W Glasgow, Shieldhall is located on the south bank of the River Clyde, and extends over the border from Glasgow City to Renfrewshire, 4 miles (6 km) west of the city centre. Once the site of the mid-17th century Shieldhall House, this was replaced by a manufacturing and production plants for the Scottish Cooperative Wholesale Society from 1887 and in turn by a modern industrial estate in the 1970s. The Art Deco Luma Lightbulb factory (1938) was converted into award-winning flats in 1996, now known as the Luma Tower. The Queen Elizabeth University Hospital is also located here, which opened in 2015 on the site of the former Southern General Hospital, itself built on the site of the Shieldhall Hospital and Govan Combination Poorhouse. Just into Renfrewshire, beyond the King George V Dock and Ikea Glasgow, is the world's largest dedicated Scotch whisky packaging site, Diageo Global Supply's Shieldhall facility, which blends and bottles 25% of the total Scotch Whisky output. Shieldhall Sewage Works (opened 1910, reconstructed 1980) is located close to the river where 'sludge boats' once collected the residue for dumping at sea. To the northwest is the Braehead Centre, Scotland's biggest shopping complex.