In 1174 Emperor Friedrich Barbarossa built the Kaiserpfalz around which the town developed. From the building is now only a ruin left. Hence the Imperial eagle as the main charge of the arms. The eagle can alos be seen on the seal of the town from the 13th century. The small shield is the arms of the State of Cologne , to which the town belonged from 1424-1762.
<a href="//commons.wikimedia.org/wiki/User:Juergenk59" class="mw-redirect" title="User:Juergenk59">Juergenk59</a>
2009-10-05
<span class="int-own-work" lang="en">Own work</span>