Nevertheless, most cathedrals are particularly impressive edifices. Modern edifices and apartment blocks were erected to replace the demolished structures. In a first phase, only public edifices and fascist monuments were targeted. The first Italian Gothic edifices were Cistercian abbeys. The edifices were erected by the ancestral Shona. Instances of this architectural element are typical of Gothic church edifices of the earliest period. These are dwarfed in every sense by "grand monumental edifices". The central part is graced with Catharinian and Soviet edifices, bridges, and embankments. These generalities of fascist architecture contributed to the simple aesthetics the edifices display. It is certain that the present edifices replace older edifices, which were demolished. The former Main Building is one of the twin edifices flanking the Administration Building. Many of the edifices had four or five storeys. Red brick and tiles are the main feature of most of the edifices. These volcanoes are some of the oldest identifiable volcanic edifices on Mars. The Mazama volcanic complex originally formed as a cluster of overlapping edifices.