In Athens, buildings are not allowed to surpass twelve floors such as not to block the view towards the Parthenon. There are several exceptions though such as the Athens Tower, the Atrina center and the OTE central building which exceed that level. This is due to them being either built far away from the centre or the fact that they were constructed in periods of political instability. The city's tallest structure is the Athens Tower reaching 103m and counting 25 floors.
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