Viewfinder competition: win a £150 hotel voucher

This county capital is no sprawling metropolis, but its compact Georgian centre reflects its mining history. Photograph: Alamy

The invention of a scientist educated here was invaluable for workers in that industry, who would fortify themselves with strong nectar from nearby farms. Photograph: PR

A prominent baby took its maternity hospital by surprise. Name the city. Photograph: Stefan Rousseau/PA

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 19 April 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 Cagliari, Sardinia. The winner was Jan Haldane, from Albridge, Essex. Photograph: Stu Meech/Getty Images/Flickr RM