Monogram of the king Louis XIII in the western half of the northern side of the Cour Carrée du Louvre, Paris, France. The greek letter lambda is traditionnaly associated with Louis XIII.
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<a href="//commons.wikimedia.org/wiki/User:Tangopaso" title="User:Tangopaso">Tangopaso</a></div>
<span class="int-own-work" lang="en">Own work</span>