Did you shoot it in RAW or JPG? If the later then maybe that's the reason. But it's not that bad is it?
I'm fastidious sometimes about unwanted converging verticals and also curved features that should be straight (due to lens distortion). My work flow is a) correct any 'rotation' error about the lens axis (i.e. ensure horizons are horizontal). b) correct for curvature c) correct for perspective if needed/desired.
Doesn't always work though :-( sometimes you just chase the errors round and round)
About the building, were the circular features originally windows, if so why the change? We see many older buildings in the UK where windows have been bricked in or made into another kind of feature, this was due to a "window tax" that was introduced in the late C17th, the more windows facing the street the higher the tax! Although the tax was repealed in the mid C19th many such buildings still have their windows bricked up.
Linky-no-worky but I get the idea. I was also curious about the apparent lack of symmetry in the picture. The left third of the building has features that look narrower than the right third. The window brows and "marble discs" being the most obvious. Maybe it's an artifact of editing?