This city gives its name to one of the world’s most popular cuisines (and a major language) ...Photograph: Guardian... which has been exported to every corner of the globe by the region’s emigrants. Photograph: AlamyPhotograph: www.alamy.comIn recent decades millions of workers have moved in the other direction to drive this modern industrial powerhouse. It once had a druggy reputation. Name the city.Photograph: Xinhua PressThis week’s winner will receive a £150 voucher from Hotels.com which can be used at more than 120,000 places to stay across the world, from quirky B&Bs and family bolt holes to boutique hotels. Hotels.com customers can get a night free for every 10 stayed with its rewards scheme. Email your answer by Thursday 12 May to viewfinder@observer.co.uk or send a postcard, with address and phone number, to Viewfinder, The Observer, Kings Place, 90 York Way, London N1 9GU.
■ Last week’s answer was Hamburg. The winner was Ashank Bidri of London. Photograph: AlamyPhotograph: www.alamy.com