Luis Enrique's men handed Los Blancos a humiliating defeat at Madrid.
Luis Enrique is convinced his side's 4-0 triumph over rivals Real Madrid at the Bernabeu was so good it'll have to "go down in history".
The La Liga champions beat the hosts as a double from Luis Suarez and also goals from Andres Iniesta and Neymar handed the Catalans three points.
“This victory is glorious, especially in the way that it came about." said Enrique, as the Daily Mirror quoted.
“We were the better side and the triumph is down to us.
“There is a long way to go but it is always important to win here.
“It has been an all round performance. It will go down in history as a memorable game for Barca.”
Barca are six points clear of Rafa Benitez's men.