Which cities did you think I missed?
So I'll just say quickly:
1. Tallinn and #estonianmafia (3 500Startups investments, 6 Seedcamp investments)
2. Helsinki and the world's leading gaming scene.
Also: if you want to make the review serious, decide on the cities based on statistics. As Seedcamp for Europe, which are their top cities for their investment winners. Don't shoot from the hip.