Henry I the Fowler Duke of Saxony base the oldest castle in Europe Albrechtsburg, 929.
<div class="fn value">
<a href="https://en.wikipedia.org/wiki/de:Alfred_Diethe" class="extiw" title="w:de:Alfred Diethe">Alfred Diethe</a></div>
1850<div style="display: none;">date QS:P571,+1850-00-00T00:00:00Z/9</div>
<span class="int-own-work" lang="en">Own work</span>