The crossing space, looking north west

Here we are looking diagonally across the crossing space: directly in front is the northwest crossing pier which forms the angle between nave and north transept. This crossing pier, relatively slender, supports two arcade arches meeting at 90 degrees: these arches adjacent to the crossing are wider than the other arcade arches. In the transept arm the three bays become progressively narrower towards the façade. Look upwards: you can see that the dark triforium continues unchanged from the nave into the west side of the transept. Looking at the interior of the north transept façade you can see the little arched window above the portal: the tracery of this window was popularly known the the "spider." This window, together with the great expanse of tracery above, was installed in the years around 1300. The tracery elements of the upper façade appear to have been reused and the stained glass may include elements from the recently-demolished nave aisle windows. In the horizontal "triforium" there is a gallery of kings. It is impossible to discern any coherent figurative program in the great rose. Structural insecurity is reflected in the two buttresses which have been built into the window.
What was the north transept used for? At least three functions: baptism (the font is located in the north-west corner), burial and to accommodate to the east the chapel of Saint Sebastian, invoked in times of plague.
Note: the baptismal font may have been originally created (c.1190) for the ritual washing of the bodies of defunct clergy.