You might think if you have an eyesore you have a problem with your eyes. You do in a way but not physically.
An eyesore is what people say to describe something that is ugly and horrible to look at.
Usually, it is something like a rubbish heap or a derelict building that clashes with its local environment whether that is in the landscape or in the town. Some people might describe the cultural palace this way.
One thing for certain is that the Tricorn Centre in Portsmouth has always been an eyesore - or maybe you'll like it.
Watch this very interesting short documentary and decide for yourself.