hypostyle hall has a central roof that is higher than its side roofs, like the Gothic cathedrals in Europe.
Greek: `many columns'; refers to the large columned hall in most temples.
having a roof or ceiling resting upon rows of columns.
A hall whose roof is supported by many huge columns. Gk: rest on pillars. UP
In architecture, a hypostyle hall has a flat ceiling which is supported by columns, as in the Great Hypostyle Hall at Karnak. In this case the columns flanking the central avenue are of greater height than those of the side aisles, and this admits of openings in the wall above the smaller columns, through which light is admitted over the aisle roof, through clerestory windows.