ABSTRACT
Inorganic fullerenes, in particular, those consisting of several nested polyhedral cages are a vigorous and challenging field of research. They are equally important to both, theory and experiment. This review presents various perspectives of this kind of molecular clusters, thereby mainly focusing on geometric features, symmetry, and building principles from a polyhedral point of view. Other physical properties are addressed only in passing. It is their polyhedral shape associated with high symmetry that bestows on these species an appearance of utmost grace and beauty.
