 About a dozen World Fairs were organised during the second half of the nineteenth century.Seven times an international invitation chess tournament was part of the event (London 1851, London 1862, Paris 1867, Vienna 1873, Philadelphia 1876, Paris 1878, Paris 1900).The third tournament took place in the Grand Cercle, 10 boulevard Montmartre, Paris, from 4 June to 11 July.