Cross-section of the <b><a href="https://en.wikipedia.org/wiki/Arc_de_Triomphe" class="extiw" title="en:Arc de Triomphe">Arc de Triomphe</a></b>
Unknown author<span style="display: none;">Unknown author</span> (Jean-François Chalgrin)
<a href="https://de.wikipedia.org/wiki/Allgemeine_Bauzeitung_(1836%E2%80%931918)" class="extiw" title="de:Allgemeine Bauzeitung (1836–1918)">Allgemeine Bauzeitung (1836–1918)</a>, Beilage CLXXX<br><small>(<a rel="nofollow" class="external free" href="http://anno.onb.ac.at/cgi-content/anno-plus?aid=abz&amp;datum=1838&amp;page=485&amp;size=100">http://anno.onb.ac.at/cgi-content/anno-plus?aid=abz&amp;datum=1838&amp;page=485&amp;size=100</a>) </small>