The image shows a poster with a map of the city of San Francisco, California, with text and numbers indicating the location of the citadel.
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The image shows a poster with a map of the city of San Francisco, California, with text and numbers indicating the location of the citadel. The map is detailed and shows the streets, buildings, and other landmarks of the area. The text on the poster provides additional information about the citadels, such as their names, dates, and locations.