The Water Glyph Altar is a location found in the City. It houses the Water Glyph which manifests only after providing water to the statue. Raziel needs to be able to swim to reach this area.
This location is accessible via Water tower's pipe and it leads into a small water reservoir with a waterfall. The altar itself is situated on the opposite side of the climbable wall. The far end of the room housed a statue of a woman with winged armour, the altar's guardian. In order to awaken her, Raziel must venture behind this room and plug the hole with a pushable block. Once this was accomplished, the room was filled and the excess water would flow through a small opening and the statue will award Raziel with Water Glyph.
Behind the scenes[]
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The Water Glyph altar has some more interesting Spectral Realm effects in the Soul Reaver alpha. Matching up with pre-release screenshots the area is notably more colourful in Spectral and features much more geometry morphing. The "astat" statue is present in all alpha builds, however the game seems to have difficulty loading the statue itself which makes the area prone to crashes.
The back room features a repeated winged figure along the wall. This is a real life mural called Le Départ de 1792 by François Rude and found on the Arc de Triomphe.