Tits [ 191 has initiated the study of geometries having properties strongly resembling those of buildings (compare [6]). His main result is that, in general, such a geometry is the image of a building under a suitable type of morphism. These geometries that are almost buildings were called GABS in [lo], and finite examples were described in [2, 8, 10, 15, 161 that are not buildings but have highly transitive groups. In this paper we will proceed in the opposite direction. An unexpected type of… CONTINUE READING