This is the 'original part' of County Hall in Trowbridge, the administrative centre for Wiltshire Council.
Here is a little history about it...
From its formation in 1889 Wiltshire County Council had offices in several buildings in Trowbridge, building a new office in Hill Street in 1913. This became inadequate and more office space was rented in the town.
The county council decided to have new offices in 1929 and there was some dispute as to whether the new offices should be in Trowbridge or Devizes. A decision was made in favour of Trowbridge in 1933, because of the convenience of rail travel, and the site in Bythesea Road was bought for £1,650.
The new building, designed by P.D. Hepworth, was begun in 1938 and completed in the late summer of 1940. It cost £150,000.
The design is believed to have been inspired by a building in Amsterdam.
As the stonework was brilliant white originally the building provided a landmark for enemy aircraft in World War II and was camouflaged by means of a huge net covering it between 1940 and 1943.
