Viewfinder competition: win a £150 hotel voucher

Founded 750 years ago, 30 years before its more popular neighbour, this city was once the hub of production of a lucrative commodity. Photograph: Alamy

Today, tourists are beginning to flock here for temples, treks, boat trips and access to more remote settlements. Photograph: Alamy

A highlight of the calendar is a polo championship with a gigantic twist. 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, 26 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 Guimaraes, Portugal. The winner was Katie Hendry, from Watford, Kent. Photograph: Alamy