Chelsea's performance at the Camp Nou is already being hailed as one of the greatest ever performances by a British side away from home in Europe.
In honour of their achievement, we have decided to compile our favourite 10 away day European performances from the last 20 years.
A couple of rules for starters: it has to have been a proper 'away' match — so no Miracle of Istanbul or United's two late goals against Bayern Munich in the 1999 European Cup final.
Also, we have decided to limit it to one entry per club to add variety and have stuck to a 20-year window to save ourselves some epic research.
Be sure to let us know about any omissions though, and if you have any stories about away days in Europe, good or bad, then please share in the comments.
Bayern Munich 1-2 Norwich City — UEFA Cup second round first leg 1993
Jeremy Goss: "There's no doubt Bayern assumed it would be easy."
Norwich City are the only English club side who have ever won at Bayern's old Olympic Stadium - a memorable first-leg win against a team that contained the likes of Jan Wouters, Mehmet Scholl and Lothar Matthaus. The iconic memory from the game is Goss's stunning volley in the 12th minute that put the Canaries in front and current QPR assistant Mark Bowen then doubled their advantage in the 26th minute. Christian Nerlinger got one back for Bayern before the break but Norwich's defence stood firm. Mike Walker's men drew the return match at Carrow Road 1-1 to go through before his side, which contained club legends like Chris Sutton, Bryan Gunn and Ruel Fox, were beaten by Inter Milan in the next round.
Juventus 2-3 Manchester United — Champions League semi-final second leg 1999 (United win 4-3 on agg)
Sir Alex Ferguson (on Roy Keane): "It was the most emphatic display of selflessness I have seen on a football field. Pounding over every blade of grass, competing as if he would rather die of exhaustion than lose, he inspired all around him. I felt it was an honour to be associated with such a player."
After drawing 1-1 at Old Trafford, United's hopes of reaching their first European Cup final in 31 years looked in tatters when two early goals from Filippo Inzaghi put Juventus 2-0 up after just 11 minutes. However, driven on by an inspired Roy Keane, United produced a sensational comeback with Keane and Dwight Yorke putting them in front on the away goals rule before half-time and Andy Cole then sealing the victory five minutes from time. Keane's simply outstanding performance came at a price — he was booked for a foul on a certain Zinedine Zidane in the first-half and missed the famous final victory over Bayern Munich due to suspension.
AC Milan 1-1 Leeds United — Champions League first group stage 2000
David O'Leary: "I believe in miracles. I'm proud for the club, the people back home, the fans and the chairman. We rode our luck but we've got big hearts and we deserve to be through. It's a great night for English football."
Leeds United's first ever crack at the Champions League was expected to be a brief one when they were paired in the same group as Barcelona and AC Milan. An early 4-0 pounding at the Camp Nou seemed to confirm this, but by their final game they just needed a point to go through. A superb Dominic Matteo near-post header just before half-time put them on their way and despite a Serginho equaliser in the second half, Leeds' 6,000 travelling fans got to celebrate a famous draw. Barcelona, who went out at Leeds' expense, were furious. "I'm very disappointed in the Italians," said their president Joan Gaspart. "They went round saying they would beat Leeds, that their honour was at stake — and then they can only draw."
Feyenoord 2-3 Newcastle — Champions League group stage 2002
Sir Bobby Robson: "It was a fluctuating and historical evening."
Newcastle looked dead and buried in the Champions League in 2002/03 when they lost their first three matches but wins over Juventus and Dynamo Kiev meant they could qualify with a win in Rotterdam. Things were going perfectly when Craig Bellamy and Hugo Viana put them 2-0 up but Mariano Bombarda and Anthony Lurling levelled matters. However, Bellamy chipped in a winner in stoppage time to complete a rollercoaster evening.
Inter Milan 1-5 Arsenal — Champions League group stage 2003
Arsene Wenger: "Not in my wildest dreams could we have predicted that sort of result."
Arsenal's Champions League hopes were finely in the balance when they travelled to Milan for their penultimate group game - but they turned on the style to thump Inter 5-1 despite missing Patrick Vieira, Sylvain Wiltord, Martin Keown and Lauren. Thierry Henry was the hero as he scored two including a stunner that started from inside his own half. Three of Arsenal's goals came in the final five minutes and the Gunners confirmed top spot in their group two weeks later with a 2-0 win over Lokomotiv Moscow.
Barcelona 0-0 Celtic — UEFA Cup fourth round second leg 2004 (Celtic win 1-0 on agg)
Martin O'Neill: "It was a fabulous effort - the players are all out on their feet. They were amazing to keep going like they did. Some of our younger players really came of age out there."
Celtic travelled to Barcelona with a slender advantage thanks to Alan Thompson's winner in the first leg, but had to take on Ronaldinho and Co. with rookie goalkeeper David Marshall between the sticks. However, the 19-year-old made a string of stunning saves, while another youngster, John Kennedy, was sensational at the back. Neither player went on to establish themselves as regulars at Parkhead, but they will always be remembered for this night at the Camp Nou.
Barcelona 1-2 Liverpool — Champions League last 16 first leg 2007
William Hill spokesman Rupert Adams: "If we have got away with £50,000, I'd be chuffed to bits. As far as I know, a few Liverpool players own a couple of horses and they read the racing press, so I'd assume that they were aware of the bet on offer and they may have told a few of their mates."
Craig Bellamy was the toast of Liverpool as he celebrated his goal against Barcelona with a cheeky golf swing after media reports before the game alleged that he threatened team-mate John Arne Riise with a golf club following a boozy karaoke session. Ironically, Riise also scored, and the bookmakers admitted after the game that they received a flood of bets from the Liverpool area at odds of 100-1 that Bellamy would celebrate in such a manner. Liverpool lost the second leg 1-0 but went through on away goals during a run that saw them reach their second final in three seasons.
Sporting Lisbon 0-2 Rangers — UEFA Cup quarter-final second leg 2008 (Rangers win 2-0 on agg)
Walter Smith: "It will be one of my proudest moments if we get to the final. I've been proud of the way the team have handled the pressure of having to win these games."
This was perhaps the stand-out away performance from Rangers during their run to the 2008 UEFA Cup final. Walter Smith's side made hay in the competition with superb defensive displays but also got on the scoresheet twice to dump out the Portuguese giants. Jean-Claude Darcheville got the key goal in the 60th minute then Steven Whittaker put the icing on the cake in stoppage time. Rangers then knocked Fiorentina out in the semi-finals on penalties after two 0-0 draws before losing to Zenit St Petersburg in the final.
AC Milan 0-1 Tottenham — Champions League last 16 first leg 2011
Graeme Souness: "Gattuso is a little dog and well past his best. I wish he had five minutes with Joe Jordan in a room on his own."
It was a night when Spurs where sublime and Milan imploded. Peter Crouch scored the only goal of the game after a superb run and cross from Aaron Lennon. It proved enough as a 0-0 draw at White Hart Lane sent Tottenham into the quarter-finals in their debut Champions League season. Milan's Gennaro Gattuso was banned for four matches after headbutting Tottenham assistant Jordan at the end of the match, sparking the wonderful quote from Jordan's former Scottish team-mate Souness, who was covering the match for Sky.
Barcelona 2-2 Chelsea — Champions League semi-final 2012 (Chelsea win 3-2 on agg)
Roberto Di Matteo: "We've had a difficult season but they always managed to produce something special when we had to and I think that's part of the DNA of these players."
John Terry's knee. Ramires's chip. Messi missing a penalty. Torres rounding the keeper. Gary Neville's 'goalgasm'. It all only happened last night - but it already feels like a classic.
Remember to leave your away day memories in the comments...