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1 (of 9) The Nobel Peace Prize Award Ceremony at the Oslo City Hall in Norway begins with a trumpet fanfare.

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2 (of 9) A view of the Oslo City Hall during the Nobel Peace Prize Award Ceremony on 10 December 2012, where the Nobel Peace Prize was awarded to the European Union (EU).

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3 (of 9) Thorbjørn Jagland , Chairman of the Norwegian Nobel Committee, delivers his presentation speech.

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4 (of 9) Violinist Eldbjörg Hemsing performed Johan Halvorsen's "Norsk Dans no 1" and "Bols vise" by Ludvig Irgens-Jensen during the award ceremony.

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5 (of 9) Herman Van Rompuy, President of the European Council, delivered the Nobel Lecture "From War to Peace: A European Tale".

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6 (of 9) OqueStrada, a Portuguese folk music group, entertained the audience.

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7 (of 9) José Manuel Durão Barroso, President of the European Commission, delivered the Nobel Lecture "From War to Peace: A European Tale".

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8 (of 9) The Norwegian Royal Family applauds this year's Nobel Peace Prize Laureate. From left: King Harald V, Queen Sonja, Crown Princess Mette-Marit and Crown Prince Haakon of Norway.

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9 (of 9) Presidents Herman Van Rompuy, José Manuel Barroso and Martin Schulz receiving the Nobel Prize medal and diploma for the European Union (EU) during the Nobel Peace Prize Award Ceremony at the Oslo City Hall in Norway, 10 December 2012.

© The Nobel Foundation 2012 Photo: Ken Opprann