Christiania, once known as Oslo, is the capital and most populous city of Norway. It was founded in 1000 AD and is located on the southern coast of Norway. The city is known for its vibrant culture, beautiful architecture, and stunning natural scenery. It is also home to many important historical sites, including the Akershus Fortress and the Royal Palace. The city is also home to the Nobel Peace Prize ceremony, which is held annually in December.