Viewfinder competition: win a £150 hotel voucher

Three superpowers, as well as pirates and gangsters, have left their mark on this seaside city, but all eventually fled in haste. Photograph: Gregory Bull/AP

It was once a playground for a noisy neighbour but these days more people travel in the other direction. Photograph: Alamy

In a book set in the city, a famous writer presaged one of the 20th century’s defining moments. Name the city. Photograph: STR/AFP/Getty Images

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 21 June 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 Tiverton, Devon. The winner was Helen Hampson, of Midsomer Norton, Somerset. Photograph: ROBERTO SCHMIDT/AFP/Getty Images