Hall of Seven Cascades
The Hall of Seven Cascades in the city of Atria is the largest temple to Ioun in Andrannar. It is functionally a place of worship, but is widely known for its huge and extensive, eight-storied library.
It is named for the channels of water that run throughout the library, cascading from the top floor to the next, and so on, until it collects in a great pool on the bottom floor. Some force or mechanism pulls the water from the pool up a pipe back to the top of the structure, and so creating a continuous flowing of the water. As the priests of Ioun are fond of saying, “Let knowledge flow unceasingly, like water from the hills.”