Complex sentence: Built by a architects Sergei Serafimov, S.Kravets and M.Felger, and only in three years it would become the highest structure in Europe, and its unique feature lies in the symmetry which can only be felt at one point, in the centre of the square.
Split into simpler sentences: Built by a architects Sergei Serafimov, S.Kravets and M.Felger, in only three years it was to become the tallest structure in Europe. Its unique feature lies in the symmetry which can only be felt at one point, in the centre of the square.