Can see the similarity but "built mostly with unfinished concrete" != Brutalism.

It has a defined style, my absolute favourite is The Barbican Estate in London

https://upload.wikimedia.org/wikipedia/commons/e/eb/London_b... https://en.wikipedia.org/wiki/Barbican_Estate

When done without style it's horribly oppressive though but I don't think any less oppressive than the nasty steel and glass monoliths going up everywhere.

Also I love concrete, when done using high grade materials and polished it leaves a lovely finish approaching marble.

I'd quite like to use it as a material for furniture but for the weight problems.