The paper deals with the laserscanning and photogrammetric surveying, the 3D photorealistic modeling, and the virtual navigation of the Thodorian mosaic floor the Basilica of Aquileia, the widest and oldest mosaic pavement in the Christian western world. From the acquired data, 18 clouds of 3D point and 158 digital images, a detailed model of such non-planar surface has been obtained and the images have been projected onto it as 3D textures. Finally, some thematic routes have been defined so creating navigation virtual tours to well understand and enjoy the various parts of the mosaic floor.
