Viewfinder competition: win a £150 hotel voucher

This island in the eurozone has at times shared a name with a popular chocolate biscuit … Photograph: Chris Hellier/Corbis

… though its current name celebrates a link between two groups of 18th-century revolutionaries… Photograph: Alamy

… tourists come for its beaches, wildlife and mountains, though some may have been deterred by a recent epidemic of a painful viral fever. Name the island. Photograph: Bertrand Rieger/Hemis/Corbis

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 boltholes to boutique hotels. Hotels.com customers can get a night free for every 10 stayed with its rewards scheme. Email your answer by Thursday 6 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 Tenby, Pembrokeshire. The winner was Philippa McEntee, from Oldham. Photograph: Alamy