Bayern Munich face VfB Stuttgart in Saturday's German Cup final bidding to be the first Bundesliga team to win the treble of European Cup, domestic league and domestic cup titles in the same season.
Here are the six other European clubs to have achieved the feat:
1966/67: Celtic (won the European Cup, Scottish League Championship, Scottish Cup, Scottish League Cup)
1971/72: Ajax Amsterdam (won the European Cup, Eredivisie, KNVB Cup)
1987/88: PSV Eindhoven (won the European Cup, Eredivisie, KNVB Cup)
1998/99: Manchester United (won the Champions League, English Premier League, FA Cup)
2008/09: FC Barcelona (won the Champions League, La Liga, Copa del Rey)
2009/10: Internazionale (won the Champions League, Serie A, Coppa Italia)