The Queen and the Duke of Edinburgh are due north of the border to officially open a new university library.
The building at the University of Aberdeen, which opened to the public last year, houses more than one million books as well as collections of rare historic manuscripts.
A plaque will be unveiled by the Queen after she meets the building's architects, donors and members of staff.
Conceived by Danish architects schmidt hammer lassen as a cube to mark the ice and light of the north, the building has a sharp, modern design and is the largest capital fundraising project undertaken by the university.
The royal visitors will then travel to Marischal College in the city centre, which was originally opened in 1906 by King Edward VII.
However, the historic building has recently been transformed with the demolition of all but the A-listed granite facade.
It was reopened in June last year and is now home to more than 1,300 city council workers, having been leased from the University of Aberdeen for 175 years.
The Queen and Duke will tour the building, meeting staff and viewing an exhibition including archive film footage before unveiling a plaque.
George Adam, Lord Lieutenant of Aberdeen City, said: "I and everyone in Aberdeen will be delighted and honoured to welcome Her Majesty to the city to visit the magnificent Marischal College and the University of Aberdeen's impressive new library building.
"Marischal College was opened in 1906 by her great-grandfather and it is very fitting that Her Majesty will visit the newly regenerated building 106 years on in this, her Diamond Jubilee year."