The investment in the refurbishment of Schomberg House will articulate the story of the Orange Order, it has been claimed.
Finance Minister Simon Hamilton and Social Development Minister Mervyn Storey have welcomed the progress being made on the refurbishment of the order's HQ in east Belfast.
The ministers visited the site on the Cregagh Road, where they met representatives of the design and building teams working on the project.
Mr Hamilton, whose department is advising on the refurbishment work, said: "The significant investment in this important project will articulate the story of the Orange Order, its traditions, its development and its place within local history.
"I welcome the principles of outreach and inclusivity which underpin this programme and will serve to enhance the value of Schomberg House as a community resource."
The project is funded through the European Peace III Programme and will involve a cross-community and cross-border outreach programme.