viewing distance: this sets the viewing distance. 'Near' results in a shorter viewing distance, but can improve performance.
environment: When visibility is set to off, the trees and some other objects will not be displayed. This may further improve performance.
infobox: When you're near a faculty (entrance), the infobox displays the name of the faculty as well as the URL of the website.
map: The map displays your current position within the TU Delft Campus.

You can enter the 'Aula' and explore the interior. Go near the entrance and click the 'enter building' link that's displayed in the infobox.