Complex sentence: The former Omni Coliseum, built in 1972 in Atlanta, Georgia never stopped rusting and eventually large holes appeared in the structure, a major factor in the decision to demolish it just 25 years after construction.
Split into simpler sentences: The former Omni Coliseum, built in 1972 in Atlanta, Georgia, never stopped rusting, and eventually large holes appeared in the structure. This was a major factor in the decision to demolish it just 25 years after construction.