This book covers various aspects of spatial data modelling specifically regarding three-dimensional (3D) modelling and structuring. The realization of 'true' 3D geoinformation spatial systems requires a high input, and the developmental process is taking place in various research centers and universities around the globe. The development of such systems and solutions, including the modelling theories are presented in this book. Furthermore, several applications of the 3D geoinformation systems are also highlighted. Innovations in 3D Geoinformation Systems is intended for various geoinformation-related professionals such as GIS engineers, photogrammetrists, land surveyors, mapping specialists, and researchers, as well as for postgraduate students and lecturers.