Below are some links to properties, places of interest, cultural centres and organisations in the UK. 

Ancient Monuments Society
Arts Society North East Area
Ashmolean Museum, Oxford
British Library
British Museum
Civic Trust
College of Arms
Courtauld Institute Gallery
Dulwich Picture Gallery
English Heritage
Geffrye Museum
Hayward Gallery
Historic Houses Association
Historic Royal Palaces
Imperial War Museum
Landmark Trust
Mall Galleries
Museum of Garden History
Museum of London
Museums of Sheffield
National Gallery
National Maritime Museum
National Portrait Gallery
National Trust
National Trust for Scotland
Royal Academy
Royal Residences
Science Museum
Serpentine Gallery London
Sir John Soane’s Museum
Society for the Protection of Ancient Buildings
St Pauls Cathedral
Tate Britain
Tate Modern
The Arts Society Main Website
Tower of London
UK Database of Historic Parks and Gardens
Victoria and Albert Museum
Wallace Collection
Wentworth Woodhouse
Westminster Abbey
Westminster Cathedral