The Wiener Neustädter Altar is composed of two triptychs, the upper being four times taller than the lower one. When the lower panels are opened, the Gothic grate of the former reliquary depot above the altar is revealed. On weekdays, the four panels are closed and display a drab painted scene involving 72 saints. On Sundays, the panels are opened showing gilded wooden figures depicting events in the life of the Virgin Mary. Restoration began on its 100th anniversary, in 1985 and took 20 years, 10 art restorers, 40,000 man-hours, and €1.3 million to complete, primarily because its large surface area of .