DURHAM CATHEDRAL is regarded as the finest Romanesque building in Europe. Along with the neighbouring castle it was inscribed as a UNESCO World Heritage Site in 1986 - one of only two English cathedrals to hold such an honour. In an online poll held by the Guardian in 2011 to find Britain's favourite building, Durham Cathedral enjoyed a runaway victory. Many superlatives have been heaped on this magnificent church, standing high above the ancient...