<a href="https://en.wikipedia.org/wiki/Kastellet,_Stockholm" class="extiw" title="en:Kastellet, Stockholm">Kastellet</a> is a small citadel located on the islet Kastellholmen in central Stockholm, Sweden.
<a href="//commons.wikimedia.org/wiki/User:ArildV" title="User:ArildV">Arild Vågen</a>
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<span class="int-own-work" lang="en">Own work</span>