30 April 2012 Last updated at 07:18

In pictures: Bletchley Park decay

Photographer Rachel Marshall, sound artist Caroline Devine and Installation Artist Maya Ramsay.

A group of artists have been documenting the sights and sounds of Bletchley Park, the iconic home of Britain's World War II code breakers.

Many of the buildings including Block D are in need of urgent repair and a campaign is under way to raise funds for their restoration.

A decaying wall covered in moss and rust.

The artists document the now decaying environment in which the code-breakers used to work. Unused Grade II listed buildings have always been inaccessible to the public due to their dangerous state of disrepair.

Light shining inside a disused Bletchley park hut.

Some 11,000 men and women worked in secrecy at Bletchley Park during the war and the buildings now contain intriguing evidence of their former occupants.

Conditions are harsh in rooms that have been unventilated and occupied only by pigeons and rats for years. Some of the buildings give the impression that the workers have just downed tools and left.

The artist's project will document the visual and aural histories imbued in the buildings before they are lost when the renovation takes place.

Organic remains provide a fascinating insight into what happens when nature is left to its own devices in a building for two and a half decades.

Caroline Devine recording natural sounds by a pond.

Audio artist Caroline Devine has recorded natural radio and electromagnetic signals from around the park featuring a number of pigeons which continue their performance inside some of the blocks.

In an interview with the website jotta.com, artist Maya Ramsay said "I will spend a lot of time in a location soaking up the atmosphere; the smells, sounds and visual clues about a buildings’ past".

Interior of a Bletchley Park office at night.

Station X is at the MK Gallery Project Space until 27 May 2012. Photographs by Rachael Marshall.

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In pictures: Bletchley Park decay

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