I know nothing of the Classical aquarium(s) (I do not know if
there was just one or if there were 2), except from what I see in
pictures.
I am also making a few guesses based on location(s) as well.
There appears to be 4 units in the area of the aquarium(s)

One owner just loves the original red of the bricks.

While on the other side the other takes a totally different
approach