At first built as a simple octagon with a prismatic roof and ashlar pilasters in the centre of each face.
The following street addresses are associated with this building:
The following date-based events are associated with this building:
Alterations and additions
Iron shafts replaced stone mullions (as architect for Scotland in the Office of Works) and replacement of prismatic roof with a dome.
Design and Construction
The following individuals or organisations have carried out design/construction work. Where architects or practices worked together, matching letters appear beside their names in the Partnership Group column.