Cyclopedia of Biblical, Theological and Ecclesiastical Literature
is an apartment over the aisle, sacristy, or porch of a Church or cathedral, from which the great shrines were observed by the watchers of the Church. Such lofts remain at Nuremberg, Germany; and at Oxford, Lichfield, St. Albans, Westminster, Exeter, Hereford, and other places in England.
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McClintock, John. Strong, James. Entry for 'Watching Loft'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/w/watching-loft.html. Harper & Brothers. New York. 1870.