The Department of Housing, Local Government and Heritage has marked the anniversary of the Burning of the Custom House as part of the Government's Decade of Centenaries.
The 1921 seizure of the building was the IRA's largest single operation during the War of Independence.
Nine people - five IRA members and four civilians were killed in the gun battles, which took place in and around the building.
An event today was attended by relatives of both those who took part in the attack and civilians who were killed in it.
Due to public health restrictions, only 15 people could attend the gathering.