The National Gallery's Director, Gabriele Finaldi, and Letizia Treves, Curator of the National Gallery's 'Artemisia' exhibition standing under the ceiling of the Blenheim Saloon of Marlborough House, Pall Mall, London featuring 'An Allegory of Peace and the Arts Under the English Crown', painted in 1638 by Orazio Gentileschi and his daughter Artemisia. Photo: 2020