One of the most touching moments came when AC Milan hosted Real Madrid on April 19, 1989 - four days after the shocking events in Sheffield.
Tribute: AC Milan fans
Six minutes into the European Cup clash at the San Siro - the time when Liverpool's FA Cup semi-final with Nottingham Forest was abandoned - the referee stopped play for a minute's silence to mark Hillsborough.
And in a poignant moment, the Milan fans broke into a rendition of Kop anthem 'You'll Never Walk Alone' to salute the fans who lost their lives.
You can watch footage from the match 20 years ago below.
Hillsborough remembered 20 years on: I'll never forget their screams.Matt Barlow writes for the first time about his anguish of that tragic dayThe history of Hillsborough: How the tragedy unfolded in Sheffield