IIRC there's a "Brutalist Doom" mod for classic Doom 2 that swaps all the level textures for the gray concrete one.
I've worked (well, a satellite office, in a University's 'business centre', setting it up and occasionally maintaining it) that had an inner-atrium that reminded me directly of bits of the initial Duke Nukem 3D level...
It had an upper-level bridge that would hae been hard-pressed to do in a Doom WAD (without layout trickery...), and
really weird non-parallel/perpendicular angles despite being on a rectilinear groundplan. (If it was to reduce resonant echos, it didn't work as well as it could have! And the work areas were even worse.) I imagine they've improved things since (soft panelling/fittings and/or draped foliage - real or fake), but we were there within a short time of it opening and then it stopped being my responsibility any more.
Separately (different Uni, on a summer-school thing when I was younger), I recall a more interesting Brutalist multi-level atrium concept (plus the memorable floorplan in the entrance saying that the main lecture theatres were "numbered A to H"). It'd be interesting to see if it's still the same. The Wiki page suggests that the Lecture Centre is Grade II Listed, which is probably that bit which I remember, though another of the notable[1] buildings was demolished in 2019.
I had a long association (via another interest of mine) with Derby Assembly Rooms and probably intimently knew every inch of that (from the Stage Door, at the back, all the way up to the lighting gallery)
apart from the actual public entrance, which I may have wandered down to from the main atrium in a spare moment, but the doors were never open at those times so were far less useful to know than the various cargo-lifts and crawl-spaces. But I had many a buffet lunch in the concourse, and staring out of the windows[2]. Haven't been there for a while, but Wiki also suggests the place hasn't been open since a fire in an adjacent building forced its closure.
And there are some tower-blocks/tenements not so far from me, which are Grade-somthing Listed examples of a Brutalist design. Started off as a "Community In The Sky" sort of thing, became a shunned 'sink estate' of reducing but proud original inhabitants and proportionally more and more 'undesirables', then has been (somewhat) turned around, redeveloped and marketed as a desirable residence again. Apparently.
But I'm as interested by Iron-age hillforts, all the way through Victorian stations and then anything new that's currently being lofted up by tower-cranes. As an armchair architect only[3]. (With a bit of a B.S. Johnson bent... my armchairs would probably have four arms, two legs and also be upside-down.)
[1] Bits of Clockwork Orange were filmed there, but I didn't find that out until well after I went there myself...
[2] Perhaps coloured my appreciation of the place, which not all locals (passing by the exterior, doing their shopping) might have shared. There's the possibly apocryphal story, though, of the famous Parisian who absolutely
hated the Eiffel Tower, and yet would always choose to dine in its restaurant - on the basis that this was the one good place in Paris where the view outside was
not blighted by the sight of the Eiffel Tower.
[3] Though it
might have been my career if I had taken a different tack. And I've a cousin who run his own civil engineerng firm, and his son went into architecture himself.