Complete the following sentence: Only a few fragments of the 4th-century walls remain; for example, the original Roman wall is visible on the southern boundary of the parish church of St Peter and St Paul. ️<unk>️<unk>️<unk>️<unk>️<unk>️ ••••••••••••••••••••••••••••••••••••••••••••••••
<unk> <unk> <unk> ️<unk>️<unk>️<unk>️<unk>️ In numerical terms, the number of listed buildings makes Caistor the most important conservation area in the West Lindsey area; many of the buildings are Georgian or Victorian. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️