More than 200 Argentinian military personnel travelled to Co Mayo to visit the town where the founder of the country's Navy was born.
Admiral William Brown hailed from Foxford and today’s trip was the largest to take place by officers from the Navy he led.
The visiting party was joined by members of the Irish Naval Service for the ceremonies.
The event also attracted many Argentinians living in Ireland, keen to meet up with their compatriots.
The Naval officers attended a memorial mass in the local church before continuing a parade through the town.
Proceedings culminated on the banks of the River Moy, where a number of wreathes were laid in front of a bronze statue of Admiral Brown.
The Argentine Ambassador to Ireland, Laura Bernal, said it was a hugely emotional day for her country.
She said that William Brown was considered a hero by the people of Argentina and the visit by its Naval personnel was very significant.
Those comments were echoed by the Commander of the ARA Libertad, Captain Juan Carlos Romay.
He said that each of the officers that attended today's event would have lasting memories of the welcome they had received.
The visit was the latest link in a long-standing relationship between Foxford and Argentina.
The Mayo-based Admiral Brown Society works to promote the ties between the two countries and spent many months planning the event.
On Tuesday, over 50 children from Foxford National School will travel to Dublin, where they will board the Argentinian tall ship, the Libertad, which is docked at Sir John Rogerson’s Quay in Dublin.