I am a Filipino currently holding a Greece National Type D visa. Before traveling to Greece, however, I would like to stay in Italy for 3 weeks.
Will I have any problems at the Italian airport if I show up with this visa only? I was told I need to go to Greece before I could travel to Italy. I would like to know if anybody had a similar experience before.
Since you're going to take up residence in Greece, making it your main destination, you are allowed to visit Italy as well, unless otherwise is explicitly stated on the visa (which does not normally happen).
As stated in Timatic, the database used by airlines:
Italy: Visa required, except for Passengers with a valid D visa issued by Greece for a maximum stay of 90 days
So yes, you can visit Italy for 3 weeks.
