St. Michael's Cave
... that Gibraltar's St. Michael's Cave, prepared as an emergency hospital during World War II, at present contains an auditorium and receives almost a million visitors a year?
... that <a href="./Gibraltar" id="mwEx0" rel="mw:WikiLink" title="Gibraltar">Gibraltar</a>'s <b id="mwEx4"><a href="./St._Michael's_Cave" id="mwEx8" rel="mw:WikiLink" title="St. Michael's Cave">St. Michael's Cave</a></b>, prepared as an emergency hospital during <a href="./Military_history_of_Gibraltar_during_World_War_II" id="mwEyA" rel="mw:WikiLink" title="Military history of Gibraltar during World War II">World War II</a>, at present contains an auditorium and receives almost a million visitors a year?