Europe-Places.com has listed approx 134 Historical landmarks in Co. Mayo. Some of the Top rated Historical landmarks in Co. Mayo are- Rockfleet Castle, Killala Quay, The Guinness Tower, Rockfleet Castle, Addergoole Titanic Society, Killala Quay, Addergoole Titanic Society, Murrisk Abbey, Addergoole Titanic Society & Murrisk Abbey.