The old air traffic control tower of <a href="https://en.wikipedia.org/wiki/Hannover_Airport" class="extiw" title="en:Hannover Airport">Hannover Airport</a>, which is 45 m high and which was put into service in 1966
<a href="https://de.wikipedia.org/wiki/User:TeWeBs" class="extiw" title="de:User:TeWeBs">TeWeBs</a>
<span class="int-own-work" lang="en">Own work</span>