 Maxwell and Tuke clothed the entertainment buildings in hard @-@ wearing , red Ruabon brick with terracotta and stone dressings , and the plan of the buildings was octagonal , with the Tower , also built on an octagonal plan , at its centre . The roofline of the three @-@ to @-@ four @-@ storey building was dramatic , as four corners of the octagon were emphasised by tall pavilions with steeply pitched roofs topped by cupolas 
