Home of the High Commission of Australia. Designed by Alexander Marshall Mackenzie and built by Dove Brothers. Construction commenced in 1913, but as many of the building materials came from Australia, their transportation was delayed because of WW1.
It is usually the single largest polling station in Australian federal elections, with more votes being cast here than at any polling station in the Australian states or territories. The interior was used as the location for Gringotts Bank in the Harry Potter films.
Credit for this entry to: Alan Patient of www.plaquesoflondon.co.uk