The great wheel window in the West wall is unfortunately concealed inside by the organ. Close investigation reveals the sun’s rays emanating from the inner circle. At the centre is the image of St Mark’s winged lion holding an open book. On the pages are inscribed: ‘PAX TIbI MAR CE EVA NGE LISTA MEVS’. Venetian tradition states that when St. Mark was traveling through Europe, he arrived at a lagoon in Venice, where an angel appeared to him and said ‘Pax tibi Marce, evangelista meus. Hic requiescet corpus tuum.’ (May Peace be with you, Mark, my evangelist. Here your body will rest.)