The Stade Vélodrome in Marseille will become the 105th venue to stage Heineken Cup action if reigning champions Toulon overcome Leinster in Sunday's massive Heineken Cup quarter-final, with the winners set to meet either Munster or Toulouse on the road to the Cardiff 2014 final.
The iconic stadium which staged the 2010 Amlin Challenge Cup final is currently being redeveloped and will have a capacity of 41,000 for what could be the second match of the Heineken Cup semi-final weekend on Sunday, 27 April.
Leinster will be targeting a semi-final in the familiar surrounds of Dublin's Aviva Stadium on the same date should they come away with a prized win from Stade Félix Mayol.
The first of the 2013/14 tournament semi-finals will take place on Saturday, 26 April in Dublin or London.
Ulster could set up a two-day festival of European club rugby in the Irish capital as a quarter-final win for the 1999 European champions over Saracens will earn them a semi-final at the Aviva Stadium on the Saturday, with the possibility of a dream Leinster v Munster showdown for Irish rugby fans at the Dublin venue the following day.
Should Saracens come away from Ravenhill Stadium with a victory, then they will meet the winners of the Clermont v Leicester quarter-final at Twickenham Stadium on Saturday, 26 April.
This weekend's European action gets underway today with the Amlin Challenge Cup quarter-final clash of Sale Sharks and Northampton Saints and both clubs will have the added incentive of playing for a home semi-final on Friday, 25 April in which they will meet either Stade Français or Harlequins.
The second Amlin Challenge Cup semi-final will take place on Sunday, 27 April when the winners of this weekend's contest between London Wasps and Gloucester will take on either Bath or Brive at home.
The Heineken Cup semi-finals are played at venues designated by ERC which are selected in conjunction with the relevant home Union. Home country advantage in the last four was determined by a draw in January following the conclusion of the tournament pool stage. In the Amlin Challenge Cup, the semi-finals are played at home venues with home advantage also decided by the draw in January.
Heineken Cup Semi-Finals: (Kickoff times local)
Saturday, 26 April
Ulster v winners of ASM Clermont Auvergne v Leicester Tigers
Aviva Stadium, Dublin (capacity: 51,000) 15:40
Saracens v winners of ASM Clermont Auvergne v Leicester Tigers
Twickenham Stadium (capacity: 82,000) 15:40
Sunday, 27 April
Toulon v winners Munster v Toulouse
Stade Vélodrome, Marseille (capacity: 41,000) 16:30
Leinster v winners of Munster v Toulouse
Aviva Stadium, Dublin (capacity: 51,000) 15:30
Final: Saturday, 24 May; Millennium Stadium 5.00
Amlin Challenge Cup Semi-Finals: (Kickoff times local)
Friday, 25 April
Sale Sharks or Northampton Saints v Stade Francais Paris or Harlequins
AJ Bell Stadium or Franklin's Gardens 20:00
Sunday, 27 April
London Wasps or Gloucester Rugby v Bath Rugby or Brive
Adams Park or Kingsholm Stadium 13:00
Final: Friday, 23 May; Cardiff Arms Park 20:00