Established in September 1915, the branch of the Women's Institute in Llanfairpwllgwyngyll is the oldest in Britain. Although it was founded at a nearby cottage, the branch moved into the current Hall during the interwar period.

The Hall adjoins onto the c.1823 Gate Toll House (NPRN 15729) to the east and is a simple single-storey structure constructed of corrugated iron with a pitched corrugated iron roof and large square six-light windows.

[Sources: Susan Cohen, The Women's Institute (Oxford: Shire Publications, 2011), p. 7; GAT Regional Historic Environment Record, PRN 33384; Anglesey Federation of WIs website]
A.N. Coward, RCAHMW, 21.11.2018