My Second Home -Thuis -🇧🇪 🇳🇱

I’m planning a trip to visit my old classmates and friends in Belgium (Vlaanderen) and in The Netherlands next year. The main plan is to travel up north to Denmark, Sweden, or Finland. I’ll be staying with a friend in Gouda for a few days. I’m still doing some research about the things that I need and what places to visit. I haven't been to Northern Europe so if you have any suggestions, feel free to comment below.