- Use the navigation circles to browse back through previously explored material within the tour.
- View featured thematic pictures of the gallery.
- Access the alphabetic and organized content index of the featured gallery.
- Navigate through the various thematic images of the current section.
- Jump quickly to any of the main featured galleries (available from the Central Core only).
- Use interactive maps to virtually walk through sections of the featured gallery.
- Learn more about specific topics relating to the overall themes presented within each featured gallery.
