Atomium
I shared this place on minube because I think there aren't a lot of people ve have have come in after it reopened and to take advantage and say that unless you're big fans, it's not really worth it, especially for the 9 euros they charge. It's a thousand times better outside.
I had the luck since I was there on erasmus, it just so happened that they opened it that year and for me it was free, but it was a big disappointment. The best are the views and going up the escalators because it's like you're going up in a space ship. Even so, it's curious to see the spaces they've created, they're not much and not very big, in fact the cafeteria only has four kid-sized tables, believe me, I'm not exaggerating.