The small-sized, single-nave, two-storey Gothic chapel, located between the Archiepiscopal Palace and the Great Prebendary House, and lying lower than the current ground level, is uniquely designed in Europe. Its architecture and Italian-Byzantine style paintings may date back to the time of its construction in the late 13th century. It was probably built at the same time as the Gothic part of the cathedral and the contemporary reconstruction of St. George's Chapel. Its sacred function partly ceased in modern times, so in the first half of the 18th century, the lower level was already used for wine storage. Although it was restored in 1938, the baroque furnishings and repainting were removed during this time, the window of the chancel was narrowed, and it took until 1990 for the actual restoration to begin.
Renovation works are still ongoing in the building.
