A sports event
Of the 12 venues used, the Luzhniki Stadium in Moscow and the Saint Petersburg Stadium (the two largest stadiums in Russia) will be used most, with 7 matches being played at each of these stadiums.
Sochi, Kazan, Nizhny Novogrod and Samara will host 6 matches including one quarter-final match apiece, and the Otkrytiye Stadium in Moscow and Rostov-on-Don will host 5 matches apiece including one round of 16 match each.
Volgograd, Kaliningrad, Yekaterinburg and Saransk will host 4 matches each and none of these cities will host any knockout stage games.
Comment: Should be interesting, especially in the cities seldom visited by tourists.