Where I grew up, it happened to me with (primary/middle/high) schools.
During the 60s and 70s, in order to accommodate baby boomers, new buildings were built on existing school grounds, and while they were not cookie cutter copies of each other, they followed the same architectural and civil engineering principles: identical ceiling height, same fixtures, same walls, same classroom door arches, same bathroom stalls, toilets, similar fire exit paths, identical heavy steel and steel wired glass external doors, staircase layouts...
But given every location had its own available surface and urban/terrain/attendance needs, they were anywhere from 1 to 4 floors, straight corridors, or in L, or rectangular with inner courtyard, with and without basement, and overall significant practical deviations from some common standard blueprint (though I never found the common denominator) but keeping everything else the same. It was extremely eerie and disorienting visiting a different school, or getting used to another school when you moved, especially after hours when they're empty.
It's probably similar to the khrushchyovki/stalinki residential buildings in post-Soviet countries, though I've only visited them well after the collapse and they've evolved on their own. Meanwhile these schools I mention, look actually frozen in time.