Europe-Places.com has listed approx 134 Historical landmarks in Co. Mayo. Some of the Top rated Historical landmarks in Co. Mayo are- Cong Abbey, Slievemore Deserted Village, Cong Abbey, Cong Abbey, Slievemore Deserted Village, Killala Quay, Killala Quay, The Guinness Tower, The Guinness Tower & The Guinness Tower.