Celtic continue their Champions League group stage campaign with a glamour home tie against Barcelona on Tuesday night.
Here, we look at the past encounters between the sides in the east end of Glasgow.
CELTIC 0 BARCELONA 0 (Inter-Cities Fairs Cup, December 2, 1964)
Barcelona travelled to Celtic Park for the first time in 1964 for the second leg of their Fairs Cup second-round tie with a 3-1 lead from the first game in Spain. Goals from Zaldua, Seminario and Rife were countered by a strike by John Hughes. A goalless draw took the visitors through to the next round.
CELTIC 1 BARCELONA 0 (UEFA Cup, March 11, 2004)
Martin O'Neill's side hosted Barca in the first leg of their UEFA Cup clash in 2004. Alan Thompson scored to give Celtic a lead to take over to the Nou Camp, an advantage that Celtic would retain with a goalless draw.
Hoops keeper Robert Douglas and Barca midfielder Thiago Motta were sent off after a melee in the tunnel at half-time, with rookie goalkeeper David Marshall, 19, taking over. Five minutes into the second half Javier Saviola was also sent packing after a challenge on Thompson.
CELTIC 1 BARCELONA 3 (Champions League, September 14, 2004)
Celtic hero Henrik Larsson returned to Parkhead in a Barcelona shirt to help shoot down his old club's unbeaten home record in the Champions League. Midfielder Deco gave Barca a deserved lead before Hoops keeper Marshall saved a spot-kick from Ronaldinho.
Chris Sutton levelled on the hour but Ludovic Giuly's deflected shot off Jackie McNamara put the visitors back in front with Larsson sealing Barca's win with eight minutes remaining.
CELTIC 2 BARCELONA 3 (Champions League, February 20, 2008)
Gordon Strachan was Celtic manager when Barcelona visited the east end of Glasgow on Champions League duty in 2008.
Jan Vennegoor of Hesselink put the home side in front in the 15th minute with a header, only for Lionel Messi to level three minutes later.
Barry Robson restored Celtic's lead before the break but Thierry Henry curled in the leveller after being set up by Ronaldinho before Messi grabbed a wonderful 79th-minute winner.
- Celtic famously beat Barcelona last season
CELTIC 2 BARCELONA 1 (Champions League, November 7, 2012)
Celtic memorably beat Barcelona in the group stages of the Champions League last season on their way to the last 16 of the competition.
Neil Lennon's side took the lead in the 21st minute when midfielder Victor Wanyama headed past Victor Valdes from a corner.
The visitors continued to dominate possession but with seven minutes remaining teenage substitute Tony Watt grabbed a sensational second.
Lionel Messi pulled a goal back in injury time but it was too little, too late.