The Mansion is one of the most iconic buildings on site. It is where the first Codebreakers were based before the workforce expanded into newly built huts, and later purpose-built brick and concrete blocks. Today you can explore a number of temporary and permanent exhibitions here including:
- The Office of Alastair Denniston, Head of the Government Code and Cypher School, and the room where the US-UK Special Relationship was born.
- The Library, atmospherically dressed as it would have looked as a Naval Intelligence office during WW2.
- Our Veterans Stories exhibition, bringing you some of the many stories of life and work at Bletchley Park during WW2, from cooks to Codebreakers.