Doors opened at 11am today with lots of activities including horse-riding, train rides, climbing wall, Fosset's Circus and more.
Barretstown celebrates it's 30th anniversary today with a family picnic at it's estate.
The charity hopes to help over 22 thousand children suffering from cancer and serious illnesses in hospitals and schools throughout the county and country this year and has served 120,000 children.
The big picnic fundraising event is welcoming families to the event.
Dee Ahearn CEO of Barretstown says there's something for everyone. Some of the activities include horse-riding, mini-golf, Fosset's circus, climbing wall, train rides, live music, food stalls and a teddy bear clinic.