Viewfinder competition: win a £150 hotel voucher

Sugar, spice and all things nice, including textiles, silver and, er, moneylending, made this port the richest in Europe at one time. Photograph: Alamy

Though one striking building reflects trade in something less durable … Photograph: Alamy

… it is famous today for a prized commodity – chocolate versions are easier on the wallet. Name the city. Photograph: Alamy

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 22 March 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 Scottsdale, Arizona. The winner was Brian Stephenson, from Mancetter, Warwickshire. Photograph: Katsuhisa Kida