There are many websites already listing architectural history links: one of the best is RIBA Links. This page does not aim to be an exhaustive list, merely a convenient point of departure. The organisations listed below are not affiliated with the SAHGB, but have been chosen for listing here because of their similarities of aims or likely interest to viewers of the SAHGB's pages. Architectural history is recognised as a broad discipline that touches upon and overlaps with many others; sites are only listed below if they have significant relevance to the specific discipline, however.
The National Amenity Societies receive funding from English Heritage in recognition of their work commenting on listed building consent applications and, in the case of the Garden History Society, on planning applications affecting historic gardens and landscapes.