GLASGOW'S contemporary art festival, GI, which begins this week, will not only involve dozens of international artists and a replica of Stonehenge but also a medieval siege – of Govan.

The area of the city will be bombed with messages delivered by two medieval siege catapults, or trebuchets, as part of one of the art projects which will be launched in the city on Friday.

Artists such as the Turner Prize-winning Richard Wright and Jeremy Deller, who will erect the Stonehenge copy on Glasgow Green, the Scottish artists Karla Black and Adrian Wiszniewski, the award-winning film maker Rosalind Nashashibi and German photographer Wolfgang Tillmans are all taking part in the festival, which runs until May 7.

The most literally combative show, however, will be Nothing About Us Without Us Is For Us, a series of events in Govan and the Clyde led by artists Matt Baker and TS Beall, who will be firing presents and gifts across the Clyde using the two siege engines on April 28.

The trebuchets are part of a celebration of the history of the area, which was the home of the court of the kingdom of Strathclyde in the early medieval age.

Mr Baker said: "We will hopefully also be drawing attention towards a very rich [medieval] history in Govan that not many people are aware of."