 From 1996 to 1998 an underground car park was built under the Augustusplatz with many entrances and ventilation shafts leading on to the square, the construction of which proved controversial.The carpark's eight illuminated glass cylinders housing the stairwells have been mocked in particular, being nicknamed "Milchtöpfe" or milk-bottles.The construction of the university's new main building or Paulinum involved a fierce controversy over the possible reconstruction of the university church between 2002 and 2004 .