Original sentence: Bearing in mind that the early Christian churches were actually Christianised sites with ancient origins as places of worship long before buildings dedicated to that purpose had been erected there: "There is a curious symmetry about the positioning of the three Perpetual Choirs in Britain.No modern discussion of theories regarding the construction and purpose of Stonehenge would be complete without mentioning the work of British author John Michell (1933-2009) who noted that the "ley lines" Alfred Watkins spoke of appeared to be in alignment with various traditional sacred sites around the country.Stonehenge and Llantwit Major are equidistant from Glastonbury, some 38.9 miles away, and two straight lines drawn on the map from Glastonbury to the other two choirs form an angle of 144 degrees...The axis of Glastonbury Abbey points toward Stonehenge, and there is some evidence that it was built on a stretch on ancient trackway which once ran between the two Choirs".Through a rigorous geometrical study of the proportions and mathematical relationships expressed in the site, Michell created diagrams that illustrated correlations between the design of Stonehenge and astronomical proportions and relationships, becoming thereby a key figure in the contemporary science of archaeoastronomy