The Arcades du Capitole also known as the Galerue des Arcades is a series of 29 serigraphs (silk screen prints) on translucent material fastened to illuminated cases on the ceiling of the arcade of the Capitole building. Each serigraph measures 2.50 x 3.10 metres. The series depicts the history of Toulouse. Moretti executed 89 works from which the 29 were chosen. Moretti also installed a huge Occitan cross (cross of Languedoc) made of bronze measuring 18 metres wide and weighing 20 tons embedded in the square in front of the Capitole. This panel represents the brickwork of Toulouse, a symbol of the city. The orangey-red brickwork has given the city its nickname 'ville rose' or pink city. This material was introduced by the Romans in the first century BCE, as the remains of the Roman ramparts in Place Saint-Jacques clearly show.