As you walk through the side naves of the church you will realise that the columns placed between the altars are made of different materials: some are marble, some are finished with stucco, some are fluted, some are smooth and some are Solomonic.
The use of different materials and finishes not only generates different reflections of light inside the spaces, but also different perceptions to the touch, relating to porosity, smoothness, roughness and temperature.
