Barcelona and Ajax are the first sides to reach the Champions League semi-finals this season, while Tottenham Hotspur, Manchester City, Liverpool and Porto are all in contention to join them in the last four.
But can you remember every team that has reached the semi-final stage since the competition rebranded?
A total of 29 teams have made it to the last four since 1992. Can you name all of them?
Take the quiz below and be sure to respond to us on Twitter at @Squawka with your score.