Place Saint-Lambert is a square in the centre of Liège , Belgium . Until 1794 , it was the site of St. Lambert 's Cathedral . Remains of the foundations of the cathedral have been conserved , and are on display at the Archéoforum , under the square . The largest public building on the square is the former Prince-Bishops ' Palace , which now houses the '' Palais de justice '' ( courthouse ) and the '' Palais provincial '' , i.e. the government building of the province of Liège . There is a large bus station in the lower part of the square , which serves as the local transport hub for the city . On 13 December 2011 , a murder – suicide attack took place in the square , in which 6 people were killed and 125 were injured .
murder – suicide attack
2011 Liège attack
Place Saint-Lambert