Caption: The astronomical clock of Strasbourg Cathedral, Strasbourg, Alsace, France.

An astronomical clock is used to track the astronomical motions of astronomical objects and NOT just do daily timekeeping.

Credit/Permission: © Didier B (AKA User:Sam67fr) 2005 / Creative Commons CC BY-SA 2.5.
Image link: Wikipedia: File:Cathedrale de Strasbourg - Horloge Astronomique.jpg.
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