Hub of global capital,
I can't remember exactly when I first visited Luxembourg, or indeed even if I've been there more than once. But I do distinctly recall being there as a child, while travelling through Europe with my family, eating at a MacDonalds in the centre of Luxembourg City and thinking that BigMacs are more expensive there than in the UK.
I'm sure there's more to Luxembourg than expensive BigMacs. There's also the incredible wealth that makes it one of the wealthiest countries in the world. But perhaps not a whole lot more than that.