In this paper, we describe a method of dynamic creation of interactive presentations for Mixed Reality environments. The presentations are created automatically for collections of multimedia objects arbitrarily arranged in virtual presentation spaces stored in a database. Users can navigate between the spaces using Web and 3D multimedia contents. The objects in each space are presented through a presentation template, which determines both the visualization and the interaction aspects of the presentation. The possible user interactions are described using a novel language called MR-ISL. The presentation templates are coded in X-VRML, a high-level modeling language. The method can be used in various application domains. Examples discussed in the paper relate to presentation of cultural heritage and educational resources. Categories and Subject Descriptors I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism – Virtual reality; H.5.1 [Information Interfaces and Presentatio...