The Orientation of Churches: Some New Evidence

We hypothesized that the important early second millennium churches in England may have been aligned using a magnetic compass. If true, the building orientations would enable the post sixteenth-century geomagnetic observatory records to be extended back several hundred years. Directional data were collected from 143 sites, most of which were constructed between the mid-eleventh and late twelfth centuries, including all of the old English cathedrals and many large church buildings in use today, as well as numerous ruined monastic sites. However, processing the data revealed that the compass was not used to align the buildings. Attempting to explain the data, we exhumed Wordsworth's suggestion that church orientation was governed by the sun's position as it rose above the horizon on the feast day of the saint to whom the church was dedicated. The data obtained in the present study suggest that Wordsworth's basic hypothesis might hold for as many as 43 per cent of the churches if sunrise and sunset positions are considered; sun-based Easter Day and equinoctial day orientations could explain a significant majority of the remaining sites.