The imperial capital built directly into the calcified ribcage of the largest known titan, where palaces of white bone spiral around central shafts of glowing marrow.
Osteopolis, the City of White Bone, serves as both the political and economic heart of the Ossian Empire. Its architecture mimics titan anatomy — streets follow nerve-pathways, plazas open into joint-chambers, and the Calcified Throne sits upon a platform of fossilized vertebrae. The city's lower levels, called the Marrow-Deep, contain the empire's most valuable processing facilities, where raw marrow is refined into stable magical reagents.