Thank you for the links, I’ve visited them. I didn’t found anything familiar beside Frankfurter Allee.
Mapillary seems like a good supplement to Google’s Street View.
I was in Berlin in 2014 (August), 2016 and 2018. I was meant to be also in 2020 but some foreign people has came there and the bug has spreaded so I skipped this year.
I was in Honow later (2016 or 2018) to check if it was this subway stop, but it wasn’t. I’ve also checked few other lines and their last stops but didn’t found the place.
Frankfurter Allee is too close, also I’ve been on this street few times, it has too high traffic and too high buildings to be the place I was looking for.
Strange was, that going to that station (I suppose from Alex Platz or at least line which was going through Alex Platz) I was excused from the subway train by service person due to last stop. So for some time it was last stop (Blaschkoallee) for this line, not the last designed. This may be related to the article which link you have shared to.
I’ve also checked these subway stations in Street View but these are not the places I was looking for.
For now I will stop with Blaschkoallee as it does not have anything sure against the memory I have from that time.
However, thank you for your interest.
EDIT: for sure - it wasn’t any Rathaus subway station, as I would remember that and the blocks were dark red. The only difference is that the blocks are straight but I remember them like that: _/
