Plaque: The Adelphi
This building stands on the site of Adelphi Terrace built by the brothers Adam in 1768 - 1774. Among the occupants of the Terrace were Topham and Lady Diana Beauclerk, David Garrick, Richard Doyle Carte, Thomas Hardy & George Bernard Shaw, The London School of Economics and Political Science and the Savage Club also had their premises here.
Site: The Adelphi (1 memorial)
WC2, Adelphi Terrace
The original Adelphi was a large development, even in modern terms. Most of the streets were named after the Adam brothers as was the whole Terrace since Adelphi is Greek for 'brothers'.
The four giant allegorical relief figures on the corners of the Embankment front are, listed west-east: 'Dawn' - Bainbridge Copnall; 'Contemplation' - Arthur J Ayres; 'Inspiration' - Gilbert Ledward; 'Night' - Donald Gilbert. Some other sculptural work is by Newbury Abbot Trent.
More information at Historic England.