The United Nations has agreed to help Iraq rebuild the al-Askari shrine in the city of Samarra that was badly damaged in separate attacks last year and earlier this month.
A UNESCO spokesman said €6.24m had been budgeted for the work, of which €2.22m would come from the Iraqi government with the rest coming from UN funds.
The al-Askari Mosque, also known as the Golden Mosque, one of the four major Shia shrines in Iraq, was badly damaged on 13 June in an attack that destroyed two minarets that had survived an earlier attack in February, 2006.
The bombing of the mosque last year, which wrecked the shrine's famous golden dome but did not damage the minarets, was a turning point for Iraq, unleashing sectarian violence that has killed tens of thousands of people.
Two of the 12 revered Shia imams are buried in the Samarra shrine.
Reconstruction work, expected to take 10 months, would begin 'as soon as security conditions are guaranteed', UNESCO said.
No reconstruction of the shrine has taken place, partly because of disagreements between Shias and Sunnis over how the work will be carried out. The Iraqi government blamed al Qaeda for the 2006 attack.
