<a href="https://en.wikipedia.org/wiki/Grynau_Castle" class="extiw" title="en:Grynau Castle"><b>Grynau</b></a> (<i>Grinau</i> or <i>Schloss Grynau</i>) is a castle tower, situated on the Linth canal in the Swiss municipality of Tuggen in the <a href="//commons.wikimedia.org/wiki/Canton_of_Schwyz" class="mw-redirect" title="Canton of Schwyz">Canton of Schwyz</a>, that was built by the <a href="https://en.wikipedia.org/wiki/House_of_Rapperswil" class="extiw" title="en:House of Rapperswil">House of Rapperswil</a> in the early 13th century AD.
<a href="//commons.wikimedia.org/wiki/User:Roland_zh" title="User:Roland zh">Roland zh</a>
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