of Regensburg Cathedral. One of the organization's restoration projects occurred during the 2000s. Another project the organization was involved in occurred in the 1980s, where the construction of the crypt mausoleum and archaeological exploration of the center nave were carried out. The building An unusual feature of Regensburg Cathedral is its separation from the structure of the older cloister. This separation came about when the church was rebuilt and displaced to the southwest of the earlier Romanesque cathedral. In testimony of that Romanesque precursor, the Eselsturm ("donkey tower") still stands on the north side of the cathedral; it was used in the past and is still used to transport construction materials to the upper levels. A pulley remains in the west loft, and with it materials were lifted through an opening in the ceiling near the west portal. To the east of the cathedral is the state-run Dombauhütte (cathedral building workshop) which is responsible for the preservation of the structure. In contrast with many cathedral building workshops, neither modern machines nor exclusively old tools are used. Rather, tools are manufactured in the workshop itself. The Virgin and the Angel Annunciate are two notable, monumental sandstone statues located on two pillars of the west crossing piers. Additionally there was a statue of a seated figure representing St. Peter within the main choir, but it is not there today. These sandstone sculptures were created by a man under the title of Erminoldmeister, and during the 13th century he was a significant contributor to monumental sculptures in Germany. The two mentioned statues completed in 1280 that still exist within the cathedral today, one representing Mary, mother of Jesus, and the other representing the angel Gabriel, juxtapose one another on their pillars. Mary's right hand is slightly raised toward the angel in greeting. In her left hand she holds a book, into which she is pointing with her index finger. In addition to these statues, on the eastern pillars at the crossing are stone figures of Saint Peter and Saint Paul, which were installed in 1320 and 1360–1370 respectively. On the exterior there is a Judensau (Jews' sow) in the form of a sow and three Jews hanging on to its teats. The Judensau faces in the direction of the former Jewish quarter at the Neupfarrplatz. In 2005 there was a controversy about the posting of an informational sign. The All Saints' Chapel in