Cistern of Aetius
... that the Byzantine Cistern of Aetius in Constantinople, once containing 250–300 million liters of water, is now a football stadium in Istanbul?
... that the <a href="./Byzantine_Empire" id="mwCe0" rel="mw:WikiLink" title="Byzantine Empire">Byzantine</a> <b id="mwCe4"><a href="./Cistern_of_Aetius" id="mwCe8" rel="mw:WikiLink" title="Cistern of Aetius">Cistern of Aetius</a></b> in <a href="./Constantinople" id="mwCfA" rel="mw:WikiLink" title="Constantinople">Constantinople</a>, once containing 250–300<span id="mwCfE" typeof="mw:Entity"> </span>million liters of water, is now a <a href="./Association_football" id="mwCfI" rel="mw:WikiLink" title="Association football">football</a> stadium in <a href="./Istanbul" id="mwCfM" rel="mw:WikiLink" title="Istanbul">Istanbul</a>?