 
 <prompt> Wetin dem do London for di travel site? Given di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: London na one of di top tourist destinations for di world and for 2015 e rank as di most visited city for di world with over 65 million visits. E still be di top city for di world by visitor cross-border spending, wey dem estimate say na US$20.23 billion for 2015. Tourism na one of London prime industries, wey employ di equivalent of 350,000 full-time workers for 2003, and di city dey account for 54% of all inbound visitor spend for UK. As of 2016 London dey rated as di world top ranked city destination by TripAdvisor users. 