 Each of the districts include Norman- or medieval @-@ era churches , many of which are included in the Somerset towers , a collection of distinctive , mostly <unk> Gothic architecture church towers . The prolific construction of the towers — some started before <unk> — was typically accomplished by a master <unk> and a small team of itinerant masons , supplemented by local parish labourers , according to <unk> Wright . But other authors reject this model , suggesting instead that leading architects designed the parish church towers based on early examples of <unk> design and ornamentation developed for cathedrals — their most important commissions . Contract builders carried out the plans , adding a distinctive mix of innovative details and decorations as new designs emerged over the years . These are included in the List of towers in Somerset . 
