Coolmore Stud in Fethard, Ireland, is headquarters of the world's largest breeding operation of thoroughbred race horses. It is run by the Magnier family, who have been involved with racing for over 150 years.  The Coolmore Group today operates in Australia, America and Ireland. The original farm is now known as Coolmore Ireland. Coolmore America is the breeding division of Coolmore, which operates as Ashford Stud. Coolmore National Hunt in Ireland also operates as Castle Hyde Stud. Many of Coolmore's stallions cover mares in either Ireland or Kentucky in the northern breeding season and are transported to Australia and South America for the southern breeding season.