Alicarnassus' Mausoleum

From the introduction:

Little and nothing is known of this mausoleum, nor of the elusive Alicarnassus. Some scholars argue that the name was of an ancient emperor buried here, others that it was the name of the city where once it stood, now lost in time. What is certain is that none of the grave robbers who entered it re-emerged alive. So all the treasures that should be inside may still be intact...