Haapsalu Castle
...that the cathedral in Haapsalu Castle is the biggest single-naved church in the Baltic countries?
...that the <a href="./Cathedral" id="mwBVs" rel="mw:WikiLink" title="Cathedral">cathedral</a> in <b id="mwBVw"><a href="./Haapsalu_Castle" id="mwBV0" rel="mw:WikiLink" title="Haapsalu Castle">Haapsalu Castle</a></b> (<i id="mwBV4">pictured</i>) is the biggest single-naved church in the <a href="./Baltic_states" id="mwBV8" rel="mw:WikiLink" title="Baltic states">Baltic countries</a>?