Applications that extend the basic concept of determining spatial relationships between images and generating a model allowing users to experience the images in a 3D environment are provided. One application is directed to the creation of documents that may be readily shared, viewed, and edited, wherein the documents include references to underlying content comprising a 3D environment and images positioned therein and captures connections between images. Another application relates to ranking images based on user viewing information, such as the number of users who have viewed an image and how long an image was viewed. Yet another application is directed to analyzing the spatial density of images within a 3D environment to determine points of user interest. A further application relates to using spatially indexed images to navigate between webpages and 3D environments.