There are a number of dead gods, demons and other creatures long forgotten who’s planes of existence have ceased to exist and who now float around the astral, petrified with old age and lack of followers.
While most are just ignored, or used as the occasional stopping place or landmark in the infinite phlogiston, the Githyanki are famous for using them as bases of operations, cities, fortresses and so on.
At some point this structure was the head of something large and unpleasant. And at some later time, that head was broken off from the rest of the body and then slowly retrofitted into a small fortress.
Or, if you really want to go weird, get rid of the whole astral plane stuff, and this head fortress floats timelessly 333 feet above the surface of the world, travelling where it is commanded from the spires level of the uppermost tower. It transports a team of violent warlocks and their gnomish strike force, raiding the countryside and seeking untold sources of arcane power that they have become aware of through their dark patrons.
Either way, there are numerous entry points into the head. The mouth is a huge open-air gallery (although the teeth make it difficult to land most flying creatures and craft here), and there are entrances in the right nostril and right cheek, as well as at the tops of the two towers. Thus the inhabitants are always somewhat on edge, expecting attack to come from any side at any time.
They’ve been known to “accidentally” kill each other when surprised.
Tower McDemonFace here was started as a joke really… I posted my demon-faced tower and someone said that they wanted a tower faced demon instead. And one of my patrons (Unseelie23) asked for “A ‘dungeon’ that’s inside the body of a dead creature, god, etc.”
And here’s where all that wound up… Tower McDemonFace. Who has already become a demon lord worshiped in the Yellow City in a friend’s campaign.
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