Stumped on a Crossword? Discover the Former Christiania City Name!

1. Capital of Norway
2. Home to the Nobel Peace Center
3. Host of the 1952 Winter Olympics
4. Situated at the end of the Oslofjord
5. Birthplace of playwright Henrik Ibsen
6. Known for its Viking Ship Museum
7. Located in the county of Oslo and Akershus
8. Has a population of over 600,000
9. Features the famous Vigeland Park
10. Named after the Old Norse word óss, meaning “river mouth”