Abstract
The Crusader cathedral of Tyre, built in the twelfth century and destroyed by the Mamluks after 1291, was one of the largest and most prestigious ecclesiastical buildings in the Latin Kingdom of Jerusalem. Although its above-ground remains were studied in the nineteenth century and its foundations fully excavated in the twentieth, no satisfactory plan has yet been published. A new survey of what little now remains was therefore undertaken in May 1998. This paper combines the results of the new survey with an account of the history of the building.