Opposite the south porch of S. Michael's is the entrance to S. Mary's hall, the banqueting room and meeting-place of the guild of the Holy Trinity, S. Mary, S. John Baptist and S. Catherine, and the centre for the transaction of all municipal business. The great north window, of which the mullions bear trace of a recent restoration, is visible from the street, and from an opening in the front to the hall, long since blocked up, it was customary to proclaim the acts of leet passed by the fathers of the city to the crowd below. Built as it was for the honour and glory of this guild, whose members were the chief folk of the city, the building is full of detail reminding us of the patron saints of this fraternity. We shall see this more clearly later, when we come to examine the tapestry which hangs in the Hall itself. In the meantime note that the porch, which gives entrance to the court-yard, bears on its keystone a carving, representing the Coronation of the Virgin, and from one of the stones, whence the inward arch springs, is a sculpture of the Annunciation, now almost unrecognisable, save that on the inner side the feathers of S. Gabriel's wings are to be clearly made out. To the right of the court-yard, underneath the great Hall, is the entrance to the crypt, two beautifully proportioned chambers with plain groined roof, probably once a storehouse, now a receptacle for lumber. In the end chamber or "tavern" is a fine carving of a lion. On the western side are the cupboard-like openings in the wall, intended, Sharp thinks, to receive the deeds and valuable property belonging to members of the guild.