SHANNON, IRELAND - When Irishman Michael Kelly was a boy, he loved nothing more than gazing at planes taking off and landing at his nearest airport.

Now 67, after more than half a century building what he believes is the world's largest private collection of model aircraft, he has donated the lot to Shannon Airport, where his lifelong passion for aviation began.

"I always used to love the noise of the aircraft going over my house in Limerick city and I was very curious," Kelly said after cutting the ribbon on the airport's new aviation gallery which now houses his collection in rows of display cases.

"When I made my first holy communion I asked my mum and dad to take me to Shannon airport. So I got to see the beautiful aircraft and from that day on I was hooked."

A model of a British Airways plane hangs among the A model of a British Airways plane hangs among the world's largest collection of diecast model aircraft owned by Michael Kelly unveiled at Shannon airport in Shannon, Ireland, Sept. 25, 2018. A model of a British Airways plane hangs among the world's largest collection of diecast model aircraft owned by Michael Kelly unveiled at Shannon airport in Shannon, Ireland, Sept. 25, 2018.

While he would have loved the opportunity to have become a pilot, sourcing rare model aircraft still took the Limerick man around the world. None of his 2,300 planes were produced in Ireland.

A friend said Kelly has spent 10,000 euros ($12,000) a year amassing the record haul.

The collector's favorite? A Boeing KC Tanker, one of only 10 made around the world.

Living alone in his renovated farmhouse, Kelly said there were exhibitors on the other side of the world "that would do anything" to have the collection. Instead, he donated it closer to home.

The world's largest collection of diecast model ai The world's largest collection of diecast model aircraft, owned by Michael Kelly, is unveiled at Shannon airport in Shannon, Ireland, Sept. 25, 2018. The world's largest collection of diecast model aircraft, owned by Michael Kelly, is unveiled at Shannon airport in Shannon, Ireland, Sept. 25, 2018.

"I think it's testament to the work he's done over the last 60 years and we are delighted that he has entrusted us to look after it for the next 100-years plus," said Niall Maloney, operations director at Shannon Airport.

($1 = 0.8499 euros)