Piazza Castello is the main square of Turin, the heart of the historic center of the city, where four main road axes converge: the pedestrian via Garibaldi, via Po, via Roma and via Micca. Square in shape, it houses the architectural complex of Palazzo Madama and Casaforte degli Acaja at its centre, while the perimeter is made up of elegant porticoes, built in different eras, and important city buildings.