In 1772, the precentor János György Tejfalussy (Milchdorfer) had the Tejfalussy canon house built to the immediate north of the Franciscan monastery. The main Baroque building, the arched rooms and staircase of which show the original condition, was constructed on the double castle wall, presumably on the site of two earlier Baroque buildings. The house was purchased by Canon János Homolyai. Sometime before 1746, Canon János Szabady had it rebuilt. The cellar could have been a casemate. The details of the front of the building are similar to those of the Biró-Giczey House. Of the six windows, the two central ones are enhanced by the avant-corps protruding from the principal moulding, on top of which rests a tympanum. The solid, enormous ground substructure of the frontal wall stands on a medieval castle wall. On this side the building has three stories, while on the street front it is two-storied. The court may be the remains of the passageways, the “dead-end streets,” that were characteristic of the Castle before the construction of palaces in the 18th century.

Since 1985, the building, which has undergone reconstruction several times, houses the main exhibition site of the archbishopric of Veszprém, as well as the ecclesiastical treasury, which is the second richest collection of the Hungarian ecclesiastical treasuries, consisting of around 5,000 pieces.

The works of Renaissance and Baroque goldsmiths, Orthodox liturgical objects, wood statues, drawings and liturgical textiles were collected by Bishop László Bánáss (1888-1949) and apostolic administrator Sándor Klempa (1898-1972). The institution was founded by Bishop József Szendi in 1985. The founding director was Canon Antal Márton. The Collection has preserved the 19th century replica of the Coronation Robe made in Vienna (a gift of Queen Elisabeth); the set of chasubles that were made from the coronation gala dress of Queen Elisabeth; the crosier of Cardinal Hornig, which was made in a Viennese goldsmith’s workshop (a gift of Queen Zita); the belongings of Cardinal Mindszenty from the period when he was the bishop of Veszprém; works from the workshop of the Florentine Andrea del Sarto and the Venetian Veronese; remarkable works of Russian and Serbian icon art, masterpieces of the glass-works in the Bakony Mountains, works of Herend porcelain, engravings from the workshop of the disciples of Dürer, and many Turkish, Arabian and Japanese works of art.

The Collection is responsible for the organization of temporary and permanent exhibitions in the Tejfalussy Canon House, the Archiepiscopal Palace, the chapels of Gizella and Saint George and the Piarist Church.