way for Federation Square. By the 1990s the constant traffic vibration in central Melbourne led to concerns about the structural soundness of the cathedral, particularly its spires. A public appeal, led by the then Dean of Melbourne, David Richardson, raised A$18 million to restore the spires and improve the interior of the building. The seven-year restoration project was completed in 2009, under the guidance of Falkinger Andronas Architects and Heritage Consultants (now Andronas Conservation Architecture). The restoration works were undertaken by Cathedral Stone and were acknowledged by the Australian Institute of Architects, the Victorian Chapter Heritage Architecture Award 2009 and the Lachlan Macquarie National Award for Heritage Architecture 2009. As part of the work, stone heads of former dean David Richardson and philanthropist Dame Elisabeth Murdoch, created by Melbourne sculptor Smiley Williams and carved by stonemason Daryl Gilbert, were added to the spires and new dalle de verre glass was created by Janusz and Magda Kuszbicki for the west doors and the "Eighth Day" lantern in the Moorhouse Tower. Besides Sunday and weekday Eucharists the cathedral "maintains the English tradition" of a daily choral Evensong, being the only Australian Anglican cathedral to do so. Architecture The plan of St Paul's is a traditional Latin cross, with a long nave, side aisles, short transepts, a tower at the crossing, with choir below, sanctuary and altar beyond, and a pair of towers framing the ceremonial main entrance. The interior stonework is a mixture of sandstone from the Barrabool Hills and Waurn Ponds limestone, with contrasting stripes of Victorian bluestone, giving the cathedral a warm colouring, when most other grand 19th century public buildings are faced in light grey sandstone imported from other states. It is also quite different in appearance to the bluestone Gothic of St Patrick's Roman Catholic cathedral on the eastern hill of the city. Because the spires are built from Sydney sandstone and are 40 years newer, they are a different and darker colour than the older parts of the building. The interior features rich colours and strident colour contrasts, characteristic of Butterfield's work, compared to the exterior. All the stonework is constructed of the Waurn Ponds limestone with contrasting stripes of the very dark-coloured local bluestone. The dado, floor, high altar and reredos are outstanding examples of High Victorian Gothic polychromy. The reredos is made from Devonshire marble, alabaster and glittering Venetian glass mosaics. One of the carved