Minister for Agriculture Simon Coveney has made history after becoming the first to address delegates at the DUP's annual conference.
Mr Coveney delivered an address as the two-day event got under way on the outskirts of Belfast.
The Fine Gael TD said he was delighted to take part in the conference's rural affairs breakfast at the La Mon hotel.
He said it was further proof of the growing trust among politicians on either side of the border.
"I hope we can develop the kind of friendship and kind of trust politically that's needed between the largest party in Northern Ireland and the largest party in the Republic of Ireland," he said.
"This is another step in that direction."
In April, DUP Stormont Junior Minister Jonathan Bell became the first member of his party to address Fine Gael's conference.
Recently, Taoiseach Enda Kenny broke new ground when he attended a Remembrance Day service in Northern Ireland.
Mr Kenny and Tánaiste Eamon Gilmore became the first Government ministers to take part in the traditional commemoration events north of the border.