From the Greek ὑπόστυλος (“under columns”), the term describes an architectural space in which the roof is supported by rows of columns. Hypostyle spaces are common in Egyptian, Persian, Greek and Asian architecture. In Islamic architecture, the hypostyle mosque is one of the earliest and most common plans for a congregational mosque.
Reconstruction of the Great Hypostyle Hall, Karnak, Egypt . Ca. 1290-1224 BCE.