Barcelona became the latest football team to pull off the seemingly impossible.
Here are some other memorable comebacks:
WEST GERMANY-HUNGARY
In 1954 World Cup, West Germany came back from two goals down in the final to beat Austria.
PORTUGAl-NORTH KOREA
North Korea got off to 3-0 lead within the first 25 minutes, but Portugal pulled itself together to eventually win 5-3 .
WEST GERMANY-FRANCE
The 1982 World Cup semifinal, France led 3-1 halfway through the first period of extra time but goals from Karl-Heinz Rummenigge and Klaus Fischer took the game into penalty shootout which West Germany won.
UNITED-BAYERN MUNICH
The 90 minutes had passed and with just injury time to play, Bayern led 1-0 in the Champions league final but Manchester United secured a 2-1 win to lift the European Cup .
lIVERPOOl-AC MIlAN
liverpool accomplished its own memorable comeback win in 2005 when it defeated AC Milan on penalties despite being down 3-0 at halftime in the Champions league final in Istanbul.