99% of the highrises? That's a bit harsh, don't you think? Some of Cologne's tallest highrises (KölnTurm -148m, Ringturm -110m, Herkules Tower -105m, TriangleTower -103m) are actually really nice for me, not to mention recladding projects of "medium" looking buildings like the Lufthansa Tower -95m (MaxCologne -100m).
However, Cologne has quite a few crimes against architecture , I must agree with it generally.
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