Tower of Flanvel, now half buried within a glacier, is a Wingly tower in Mille Seseau which was once both fortress and giant mobile war machine, capable of moving in aid of the five Wingly cities, and was used in the suppression and extermination of non-Winglies according to the orders of Melbu Frahma and his second in command, Faust. Faust's Tower was finally disabled by the Spear Shooter, a weapon designed by humans, based in Vellweb.