It will be a sombre day for parishioners of Windsor’s historic Assumption Church as final masses will be held Sunday before its doors close for good.

There are three masses being held Sunday, at 9 a.m., 11 a.m. and 7:30 p.m.

The closure comes after two campaigns to try to save the historic site, which is 169 years old.

Church fundraisers say the money is there and they're making one last effort before parishioners go their separate ways on Sunday.

Since 2009, organizers led two campaigns to raise enough money for repairs and restoration.

The group heading the fundraising wonders why the Diocese of London hasn’t reversed the decision.

“I think it's a travesty and it is a sad day for Windsor to be losing this historic icon,” says fundraiser Kim Spirou.

“The money is there; the will is there of the parish to see it through. The question needs to be asked to the bishop. He needs to respond to these very compelling questions."

Fundraising efforts to repair the century's old building brought in more than $10 million.

Then, once the diocese announced Assumption would close in August , officials were made aware of a new $10 million anonymous contribution.

The diocese says it needs to do its due diligence before moving forward.

The building dates back to 1842 but the parish dates back to 1728.