"Wigan Pier Quarter: Townscape Heritage Initiative"(PDF). p. 23. Retrieved July 20, 2023. The Mill is protected by a fire sprinkler system which is fed from a large metal tank within the enclosure of the Mill's tower.
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The fourteenth-century map of Venice by Paolino da Venezia [it] shows a wall only in the area of Saint Mark's Square. But the existence of the wall at that time is not supported in contemporary documents, and the map likely reflects a previous reality. See Agazzi, Platea Sancti Marci..., pp. 14–15.
