Mansion House, Dublin party conference of that year. The claim led to a security alert at the house, as the Garda Siochana and army searched for the 25-year-old bomb. Its most famous occupants included Lord Mayors: Mansion House, Dublin The Mansion House () on Dawson Street, Dublin, 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. The Mansion House was built in 1710 by the merchant and property developer Joshua Dawson, after whom Dawson Street is named. Dublin Corporation purchased the house in 1715 for
Winfield House Winfield House Winfield House is a mansion in Regent's Park, London, England, commissioned in 1936 by American heiress Barbara Hutton. The grounds are ; the second-largest private garden in the British capital after that of Buckingham Palace. Since 1955 it has been the official residence of the United States Ambassador. The house is Grade II listed as an "exceptional ambassador's residence and as a notable Neo-Georgian town house containing numerous features of note." It is located near Quinlan Terry's Regent's Park villas. The first house on the site was Hertford Villa, the largest of the eight homes originally built in