Darkness descends globally for Earth Hour

ICONIC buildings across Ireland turned their lights off and prevented the release of an estimated 30 tonnes of CO2 into the atmosphere during Earth Hour.

Government buildings, Leinster House, the Custom House, and the Four Courts were blacked out.

Countrywide, the Rock of Cashel, the most visited heritage site in Ireland, was plunged into darkness as was Cahir Castle, Ormonde Castle, Donegal Castle and Trim Castle in Co Meath.