The Mansion House (Irish: Teach an Ard-Mhéara) is a house on Dawson Street, Dublin, which has been the official residence of the Lord Mayor of Dublin since 1715, and was also the meeting place of the Dáil Éireann from 1919 until 1922. From Wikipedia
The presentation enacts a 2017 council decision underscored by a limited boycott from two group leaders.