What is the capital city of European country Norway?

The capital of Norway is Oslo. Oslo is the most populous city in Norway, with a population of around 673,000. It is located in the southern part of the country, at the head of the Oslofjord. Oslo is a major economic, cultural, and educational centre for Norway, and is home to many important institutions, including the Norwegian Parliament, the Norwegian Royal Palace, and the Norwegian National Opera and Ballet. The city is also a popular tourist destination, and is known for its beautiful scenery, its rich cultural heritage, and its vibrant nightlife.