The new centre was built to preserve historic documents
Vandals have caused damage running to thousands of pounds at the new Highland Archive and Registration Centre in Inverness.
The £10.5m building which will house and preserve historical documents is due to open a week on Monday.
Police said windows at the centre at the Bught were broken sometime between Wednesday and Thursday.
The building has specialist atmospheric and environmental controls to preserve ancient parchments.
The archive service at Inverness Library is relocating to the new building.
The building will also house the city's registration of births, deaths and marriages service.
Historical documents from Highland presbyteries and Kirk sessions are also to transfer from Edinburgh to the centre, along with documents relating to the Highland Clearances and other papers dating from before the Battle of Culloden and a Highland photographic archive, containing 150,000 images.