Symbol of Tsukuba
<a href="//commons.wikimedia.org/wiki/User:Kilom691" title="User:Kilom691">Kilom691</a>, <a href="//commons.wikimedia.org/wiki/User_talk:Mike_Rohsopht" title="User talk:Mike Rohsopht">Mike Rohsopht</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span><br><a rel="nofollow" class="external text" href="https://www1.g-reiki.net/tsukuba/reiki_honbun/e019RG00000004.html">つくば市の市章の制定について</a>1989年4月11日制定