 Its innovations included a roof of wood shingles, a second storey, the addition of a veranda, glass windows, multiple interior rooms (as opposed to a single open interior space) and the use of curved shapes as design elements.Historic sources offer conflicting accounts of these two buildings.Some maintain that Bevato was relocated and remodelled to become Tranovola, while others maintain the buildings were separate but debate which of the two houses was the first two-storey building in the Rova (still other sources award this innovation to Marivolanitra).