The factory is taking part in Doors Open Days
Members of the public will be able to see for themselves if Scotland's "other national drink" really is made from girders this weekend.
The Irn Bru factory in Cumbernauld is among hundreds of buildings across the county opening its doors to the public.
More than 900 sites offer free entrance for one or two days during the month of September as part of Doors Open Days.
Some of the sites taking part - like Barr's Irn Bru factory - required tickets to be organised in advance.
This weekend buildings in Lanarkshire, Renfrewshire, and Aberdeen are among those taking part.
The other areas involved include Stirling, Midlothian, East Dunbartonshire, Inverclyde, Caithness and Sutherland, Fife and Falkirk.
In Lanarkshire a total of 54 sites will be offering free entry, including Summerlee Heritage Centre, Chatelherault Hunting Lodge and New Lanark World Heritage Village.
People can take a look around the famous Irn Bru factory in Cumbernauld between 1000 BST and 1530 BST on both Saturday and Sunday.
At Aberdeen Sheriff Court a mock trial will be staged as part of the weekend's events.
In East Dunbartonshire the Forth & Clyde Canal Society is offering free boat trips visiting Hillhead Basin, while in Midlothian visitors can take a guided tour around the Hospital for Small Animals.