The Camp Nou fortress Champions League - Barcelona vs Manchester United No European losses since 2013

Barcelona have a golden opportunity to overcome a European barrier that has proven too tall a task for them in recent seasons: reaching the semi-finals of the Champions League.

The Catalans have a lead over Manchester United ahead of their quarter-final second leg at the Camp Nou on Tuesday night.

The good news for Barcelona is that they'll have home advantage in the second leg, welcoming United to what has been something of a safe space for them of late.

They have gone 30 consecutive games without losing at home in Europe - winning 27 of those - and that means that the Premier League giants will have a tough task on their hands if they are to go through.

It shouldn't be forgotten, though, that United have already overturned a first-leg deficit on the road in this year's competition, defeating Paris Saint-Germain in the round of 16 after losing at Old Trafford.

But Barcelona haven't lost at the Camp Nou in the Champions League for six years and the last team to win there was Bayern Munich in 2013.

The Messi factor

Since that night, Barcelona have turned their stadium into a fortress, but it still hasn't helped them to win more than one Champions League title in that time.

In all, they've played 30 games at home and scored 93 times. Defensively, too, they've been solid, conceding just 15 goals in those matches.

All signs are positive for Ernesto Valverde's side and they have history with them.

In order to progress, keeping the ball will be a good approach, and one they're familiar with. They average 64 percent possession in their games at home.

Naturally, Lionel Messi has a starring role in this trend, taking part in 26 of the 30 matches and scoring 31 times along the way, as well as providing 11 assists.

Leaving Old Trafford last week without scoring has Messi frustrated, so he'll be determined to better his home record even further.