Designer Michael Paukner has created a depiction of what ancient Hebrews believed the cosmos looked like, based on what is recorded in the Old Testament:
The ancient picture of the universe portrays a world in which the Earth is a disc surrounded by water not only on the sides, but underneath and above as well. A firm bowl (the firmament) keeps the upper waters back but has gates to let the rain and snow through. The Sun, Moon, and stars move in fixed tracks along the underside of this bowl. From below the disc, the waters break through as wells, rivers and the ocean, but the Earth stands firm on pillars sunk into the waters like the pillings of a pier. Deep below the Earth is Sheol, the abode of the dead, which can be entered only through the grave.
Click here to see the diagram.