Under an immense geodetic dome at Southern Illinois University is a completely detailed map of the world which occupies the space of three football fields.
A lot to unpack here. The “immense” dome Allen is referencing is the 14’ diameter Fuller Dome, a geodesic dome invented and lived in by ‘Bucky’ Buckminster Fuller while teaching at the university. The “World Game” was devised by Fuller as an educational simulation to use towards discovering a path to world peace. The “three football fields” large map is actually Fuller’s patented Dymaxion Map, which is projected onto an icosahedron. It is not physically the size of three football fields.

