Monogram of the king Louis XIII at the top of the entrance of the pavillon de l'Horloge in the Cour Carrée du Louvre, Paris, France. The greek letter lambda is traditionnaly associated with Louis XIII.
<div class="fn value">
<a href="//commons.wikimedia.org/wiki/User:Tangopaso" title="User:Tangopaso">Tangopaso</a></div>
<span class="int-own-work" lang="en">Own work</span>