Saint Mary of the Mongols
...that Saint Mary of the Mongols is the only Byzantine church in Constantinople to have remained Eastern Orthodox to this day?
...that <b id="mwCmU"><a class="mw-redirect" href="./Church_of_Saint_Mary_of_the_Mongols_(Istanbul)" id="mwCmY" rel="mw:WikiLink" title="Church of Saint Mary of the Mongols (Istanbul)">Saint Mary of the Mongols</a></b> <i id="mwCmc">(pictured)</i> is the only <a href="./Byzantine_architecture" id="mwCmg" rel="mw:WikiLink" title="Byzantine architecture">Byzantine</a> church in <a href="./Constantinople" id="mwCmk" rel="mw:WikiLink" title="Constantinople">Constantinople</a> to have remained <a href="./Eastern_Orthodox_Church" id="mwCmo" rel="mw:WikiLink" title="Eastern Orthodox Church">Eastern Orthodox</a> to this day?