stage 2A from Nørreport to Frederiksberg, began on 24 February. It opened on 29 May 2003. All changes to bus and train schedules in Copenhagen took place on 25 May, but to allow Queen Margrethe II to open the line, the opening needed to be adapted to her calendar. This caused four days without a bus service along the line. Stage 2B, from Frederiksberg to Vanløse, opened on 12 October. Forum Station was nominated for the European Union Prize for Contemporary Architecture in 2005. In 2007, the Ørestad Development Corporation was discontinued, and the ownership of the metro was transferred to Metroselskabet I/S. The stage 3 opened on 28 September 2007, from Lergravsparken to the airport. It followed for the most part the route of the former Amager Line of the Danish State Railways. With this stage complete, 34 trains had been delivered. However, the line had caused a heated debate, and several locals had organized themselves in the Amager Metro Group. They demanded that the line instead be tunneled, arguing that it caused a physical barrier in Amager and that it created noise pollution. Route M2 starts at Vanløse, which serves mostly a residential area, and where there is transfer to the S-train's lines C and H. The line starts elevated and is located in fare zone 2. The line then runs into the enclave municipality of Frederiksberg, running parallel to the Frederikssund Line of the S-train. At Flintholm, there is transfer to the C, F and H-lines of the S-train. Flintholm is the country's third-largest public transport hub. The station is located at the Grøndal Park, and is the borderline between the urban and suburban Copenhagen. The area around Lindevang is a redeveloped industrial area, which now is mostly residential, in addition to hosting the Copenhagen Business School. After Lindevang, the line dives into the tunnel that it follows through the city center. At Fasanvej there is another campus of the Copenhagen Business School. Frederiksberg serves the center of the municipality, that in addition to many public offices and cultural facilities, serves the University of Copenhagen's Frederiksberg Campus and another campus of the Copenhagen Business School. This station is located in both fare zone 1 and 2. Frederiksberg became a transfer station to M3 when the City Circle Line was opened on 29 September 2019. Forum is the last station in Frederiksberg Municipality, but located only a few