This is a photo of the Astronomical Clock located in the Cathédrale Notre-Dame of Strasbourg. It is the third clock on that spot and it dates from 1843. Also, it contains probably the first perpetual mechanical Gregorian computus.
Photo details: Nikon D800; 18-35mm f3.5-4.5; 1/40 sec at f/8.0; ISO 100.
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