Tramline 81 is a tramline in Brüsel 1). Used in an image in L'Archiviste to show a view on the future of Brüsel. For mysterious reasons, there seems to be a number 81 tramway line in all the places having an important connection with the Obscure Cities 2). In Brüsel, line 81 is the most twisted of the few remaining tramway routes.
See also Turin.
In Brüsel the tram 81 is seen many times 5).
Also in Carapaces tram 81 is seen.