In a 3D walkthrough virtual tour, you select some paths in location and take a sequence of phoso to cover the path. Users can go forward and backward in the path and each scene can have links to information boxes about subjects in location. Notice that you can put links to plans and maps or include an small plan in each scene
The best advantage of 3D walkthrough virtual tour is you can decide where to take the shots and what paths to cover. This make you more flexible to focus on subjects that matters the most and design a better virtual tour that interact with user smoothly and effectively