Real Madrid played their 500th game in the European Cup/Champions League on Tuesday, becoming the first club to reach that milestone. The Athletic provides a statistical and geographical tour of the competition's 70-year history, including the number of matches played by Madrid and other clubs, the representation of different countries, and notable achievements. Madrid has won 300 of their matches, the most in the tournament's history, and has the best goal difference. The article also highlights the clubs that have only played in the competition once, and the teams that have never scored a goal in the tournament.