The "vimana", also called the cella, contains the most sacred shrine wherein resides the image of the presiding deity. The "vimana" is often topped by a tower which is quite different on the outside than on the inside. Inside, the vimana is plain and square, whereas outside it is profusely decorated and can be either stellate ("star-shaped") or shaped as a staggered square, or feature a combination of these designs, giving it many projections and recesses that seem to multiply as the light falls on it. Each projection and recess has a complete decorative articulation that is rhythmic and repetitive and composed of blocks and mouldings, obscuring the tower profile. Depending on the number of shrines (and hence on the number of towers), the temples are classified as "ekakuta" (one), "dvikuta" (two), "trikuta" (three), "chatushkuta" (four) and "panchakuta" (five). Most Hoysala temples are "ekakuta", "dvikuta" or "trikuta", the Vaishnava ones mostly being "trikuta". There are cases where a temple is "trikuta" but has only one tower over the main shrine (in the middle). So the terminology "trikuta" may not be literally accurate. In temples with multiple disconnected shrines, such as the twin temples at Mosale, all essential parts are duplicated for symmetry and balance.