I am the official currency of a small, wealthy island nation known for its high quality of life and stunning natural beauty. What currency am I?

1. My name is derived from a historical figure or concept.
2. I am subdivided into 100 smaller units, called 'øre'.
3. The central bank responsible for my issuance features a famous landscape painting on one of my banknotes.
4. I am often considered a safe haven currency during times of global economic uncertainty.