Peninsula Barracks can trace its history back to Roman times and has been a military place since the Middle Ages. A large part of the Barracks has been sold and converted to prestigious residential property, but a number of the Victorian buildings have been retained as Military Museums.

The refurbishment project to transform the Guardroom into a Museum was beautifully carried out and the building is now a modern Museum.  The Corps commissioned the National Army Museum to carry out the design and the letting of the necessary Contracts to allow the conversion to take place.
 
Before the formation of the Adjutant General's Corps in 1992, four of the Antecedent Corps had their own museum.  The Royal Army Pay Corps Museum was at Worthy Down, the Royal Army Educational Corps Museum was at Eltham Palace in West London, with some displays at Beaconsfield, the Women's Royal Army Corps Museum was at Guildford and the Royal Military Police Museum was housed at Chichester. 

The collections from the Royal Army Pay Corps Museum and the Eltham Palace Museum have now been gifted by their Trustees to the Adjutant General's Corps Museum Trust and are now part of the AGC Museum collection.

The Royal Military Police Museum relocated to Southwick Park near Fareham in Hampshire, but parts of the collection are incorporated into the AGC Museum.  The Military Provost Staff Corps has a small display, mainly for teaching purposes at Colchester, and elements of this enhance the AGC collection. The Army Legal Services does not have a collection as such, but efforts are being made to ensure that this important element of the Corps is fully represented in any future display. 

Unfortunately, the WRAC Museum was gifted to the National Army Museum and this made the task of putting together a combined museum a bit more difficult.  However, with the co-operation of the National Army Museum, artefacts were assembled so that the new Museum is representative of the complete Corps, past and present.
 
The AGC Museum was officially opened by Her Majesty The Queen on Friday 21 November 2003.  During the opening ceremony Her Majesty toured the newly refurbished building and spoke to many of those who were involved in the project. 

One of the most prized items in the Museum is a War Department Driving Permit that once belonged to Her Majesty The Queen.  It is on permanent display inside the Museum.   The AGC Museum is the gateway to Winchester's Military Museums and also hosts a Visitor Centre with a Cafe where visitors can relax when visiting the Museums.   There are four other Military Museums on the site and the AGC Museum includes a Visitor and Site Interpretation Centre.
The Museum staff can be contacted on ++44 (0)1962 877826
The AGC Museum is a Registered Charity Number 1075877