What buildings with large indoor open spaces should I know of?

So I was at Antwerp central station a while ago and discovered that I get a hard on from big indoor open spaces. Antwerp central station is a train station that was renovated and upgraded by preserving all of the classic building and blending it with modern architecture in the new parts. For this renovation they worked in the z-axis and added extra platforms underneath the existing, and left an atrium open, generating extra indoor open spaces. I don't know why but the only pictures I snapped were of a schematic so I'll give you that: https://imgur.com/a/9QPX7 For more pictures I refer you to Google images... :) (Definitely add the search term "kievit", at the back entrance there is also a very unique hall)

I'm not really that much into architecture but that building left a lasting impression so I thought I'd ask reddit: which buildings should I know of if I have a thing for large/high indoor open spaces?

Bonus points if it's in Europe so I might actually visit it one day... :)