Viewfinder competition: win a £150 hotel voucher

This city is capital of a country that was swapped under a 17th-century treaty … Photograph: Frans Lemmens/The Image Bank

… for a small trading post on North America’s eastern seaboard. The colonial legacy is still evident in architecture, waterways and language. Photograph: Cameron Davidson/Getty Images

Elsewhere the country boasts pristine rainforest famed for outstanding biodiversity. Name the city. Photograph: Paul E Ouboter/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 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 2 February 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 Chiang Rai, Thailand. The winner was Sylvia Bicknell, from Haslemere, Surrey. Photograph: Ertugrul Kilic/Corbis