Memel Castle
...that the museum of the long-demolished Memel Castle, Lithuania is located in an underground chamber?
...that the <a href="./Museum" id="mwAhA" rel="mw:WikiLink" title="Museum">museum</a> of the long-demolished <b id="mwAhE"><a href="./Klaipėda_Castle" id="mwAhI" rel="mw:WikiLink" title="Klaipėda Castle">Memel Castle</a></b>, <a href="./Lithuania" id="mwAhM" rel="mw:WikiLink" title="Lithuania">Lithuania</a> <i id="mwAhQ">(pictured)</i> is located in an underground chamber?