Viewfinder competition: win a £150 hotel voucher

As well as something old and something new, some brides tying the knot in this city will need mask and snorkel. Photograph: PR

From a tiny fishing village, it was developed as a resort by one foreign power, and popularised by soldiers from another. Photograph: PR

Today’s visitors come for diving, beach life and mud, or take a more meditative option. Name the city. Photograph: PR

This week’s winner will receive a £150 voucher from Hotels.com which can be used at more than 150,000 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 23 August 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 Rio Grande Do Sul, Brazil. The winner was Kathryn Hipkin, of Newcastle upon Tyne Photograph: PR