A solid calculator complex any country can use to build their all matter calculator complex to think in all ways. Each city will be different, dependent on how that city prefers to calculate, and how they build and renovate it throughout time. Can also be used as The Armed Forces and intelligence agencies main calculator.
Ground compresses ideas by pushing them together into a solid form, this means that when you are working on ideas in ground you condense your ideas and make them smaller overall. Liquid rearranges ideas by rotating ideas from pools or oceans of ideas, through rivers to other pools or oceans of ideas, adding to one pool of ideas by taking away an idea from another pool. Gas adds ideas as gas does by dispersing its particle to fill what it is in, so the overall idea you are working on is what the gas fills up and how many ideas you have is the gas filling what it is in which determines how many ideas you will make from the ideas you have, as 1 ideas becomes 10 ideas to fill the entire idea of what you are working on. Space expands ideas infinitely as it matter in space, which goes past the point of gas which can fill what it is in to the point where the matter in space cannot fill what it is in, so space expands ideas by going as far as you can with the ideas you have and are working on, past the point of gas, to where your ideas would be considered more dreams. Space is also another way to think of 100% knowledge, space infinitely expands with only a tad bit of matter going through it with most matter pooled in the other matter types, so expanding ideas using space matter focus would mean the ideas you have are only .0000000000001 and on of all knowledge, space researchers would try to reach as far as they could as if into space to find ideas outside of the current reality box.
These might be some dam thick buildings instead of normal skinny skyscrapers, depending on how much space is needed for each level.
We could plan ahead with steps, making a space structure of steps that are highly theoretical to a solid ground step we can stand on in reality, so we are building 5 structures of steps. The solid and reality would have less steps built than gas or space would have steps built.