I am the official currency of a nation known for its breathtaking fjords, Viking history, and high quality of life. My name is derived from the word for 'crown'. My value fluctuates based on oil prices and global economic conditions. You might find me depicted on souvenirs featuring trolls or stave churches.

1. My ISO 4217 code is NOK.
2. I am not part of the Eurozone.
3. I feature images of prominent Norwegians on my banknotes.
4. Oslo is my nation's capital city.