Viewfinder competition: win a £200 hotel voucher

Festivities in this capital this weekend will include the Guy Fawkes-style burning of a hate-figure effigy … Photograph: Alamy

and the breaking of “eggs” over friends’ heads (ahem, see previous picture). There’s lots to take your breath away: from the size of the main square, Photograph: Alamy

the cathedral, and the metropolis itself, to a history encompassing empires, revolutions and football. Name the city. Photograph: Alamy

This week’s winner will receive a £200 voucher from Hotels.com which can be used at more than 160,000 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 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 Singapore. The winner was Pat Clegg, from South Anston, Sheffield Photograph: Alamy