<a href="//commons.wikimedia.org/wiki/Heringsdorf" title="Heringsdorf">Heringsdorf</a>, <a href="//commons.wikimedia.org/wiki/Usedom" title="Usedom">Usedom</a> Island, Germany - "Sea Castle", a distinctive example of German Resort Architecture ("Bäderarchitektur"), a sub style of historicism
<a href="https://pl.wikipedia.org/wiki/Wikipedysta:Klapi" class="extiw" title="pl:Wikipedysta:Klapi">Klapi</a>
CC BY 2.5 pl
<span class="int-own-work" lang="en">Own work</span>