Complex sentence: The fortifications including'the battery', the massive granite walls and the Martello tower, from which Joyce had his characters set out on the morning of June 16,1904 in the "Ulysses" odyssey around Dublin, are still extant here.
Split into simpler sentences: The fortifications including'the battery', the massive granite walls and the'Martello' tower, from which Joyce had his characters set out on the morning of 16th. June 1904 in the'Ulysses' odyssey around Dublin, are still extant here.