This ancient city does exactly what it says on its welcome sign – and its most famous export is named after it.Photograph: PRA popular erstwhile resident divides opinion, though he was loved by everyone here.Photograph: PRIts most recognisable landmark was built by a man who has a more famous one named after him. Name the city. Photograph: PRThis week’s winner will receive a £200 voucher from Hotels.com, which can be used at more than 160,000 places to stay across the world, from quirky B&Bs and family boltholes to boutique hotels. Hotels.com customers can get a night free for every 10 stayed with its Welcome Rewards scheme. Email your answer by Thursday, 10 January 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 Apia, Samoa. The winner was Mrs L Moore of ScunthorpePhotograph: PR