World's End is a hermetic covenant in the Hibernian Tribunal. It is located on Ireland's westernmost promontory, facing the endless Atlantic ocean.
The magi of World's End have a reputation as superb astronomers, and are known to practice magic closely tied to the movements of the celestial spheres. They are also known to be searching for the 'western pole' - the most westerly point on the terrestrial sphere. To this end, they have been approaching magi with similar interests, attempting to organise an expedition to the semi-mythical Purple Islands, which were the western-most land known to the Greeks and Romans.
Original source: http://aviis.wikidot.com/world-s-end
It was abandoned in 1231.