Viewfinder competition: win a £150 hotel voucher

There must be something in the water in this industrial city, site of a bitterly fought battle at the start of the second world war. Photograph: Alamy

Notable former residents include a great pianist, three Oscar-winning film directors, an influential architect and an equally influential TV scientist. Photograph: Alamy

Its coat of arms is a visual pun. Name the city. Photograph: PR

This 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 7 April 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 Tossa de Mar, Spain. The winner was Carolynn Woodland, from Wheathampstead, Herts. Photograph: Kacper Pempel/Reuters