By the 1830s, the main road into the centre of Monmouth from the north,
Church Street, had become increasingly congested and insalubrious. The street was narrow, and was used by most of the town's
butchers. According to local tradition, a local
gingerbread maker, Mrs Syner, was closing the shutters of her shop on Church Street one evening when the
mail coach to
Liverpool went through at a gallop. Her apron strings were caught in one of the horses' harnesses, and she was dragged along the ground for some distance. Escaping serious injury, she grabbed the coachman's whip, knocked out some of his teeth with the handle, and marched back to her shop to begin organising a petition for a new road to be built to bypass Church Street. The Borough Council then organised a competition for the best scheme, with a prize of £10 for the winner. The scheme also needed to include a new Market Hall, as the traditional site of the town's produce market, beneath the arches of the
Shire Hall, faced disruption because of the need to extend the accommodation for the
Assizes. , with the modern
museum extension above The prize was won by local architect
George Vaughan Maddox, who proposed a new road running to the west of the town centre, immediately above the bank of the River Monnow. Maddox's scheme was for a carriage road—now Priory Street—supported by a
viaduct built upon the river bank. A new Market Hall was to be built on one side of the road, supported by the arches. The town's slaughterhouses or "shambles" would be sited beneath the arches, and the waste from them would drain directly into the river. Maddox is also believed to have been responsible for new buildings on the opposite side of Priory Street. with an
Ionic cupola and
clerestory above the central part of the building, the whole being constructed of
Bath Stone. The town's
Post Office was located in the building from 1874 and, after 1876, the first floor of the building was used as the offices and printing works of the local newspaper, the
Monmouthshire Beacon. while The Shambles below have an independent
Grade II* listing. ==Fire and later uses==