id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-7150 London - Wikipedia .html text/html 27401 3925 73 London is one of the world's most important global cities.[18] It exerts a considerable impact upon the arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism and transportation.[19] It is one of the largest financial centres.[20] In 2019, London had the highest number of ultra high-net-worth individuals in Europe.[21] And in 2020, London had the second-highest number of billionaires of any city in Europe, after Moscow.[22] London's universities form the largest concentration of higher education institutes in Europe,[23] and London is home to highly ranked institutions such as Imperial College London in natural and applied sciences, and the London School of Economics in social sciences.[24] In 2012, London became the first city to have hosted three modern Summer Olympic Games.[25] ./cache/en-wikipedia-org-7150.html ./txt/en-wikipedia-org-7150.txt