Complex sentence: The original cathedral located in the foundation area was destroyed by an earthquake in 1861 and another was planned and started constuirse another in the New Town, opposite the Plaza Independencia but edilicias needs demolished, targeting the land to the construction of another building.
Split into simpler sentences: The original cathedral located in the Old Town was destroyed by an earthquake in 1861. Its replacement was planned for the New Town opposite the Plaza Independencia, but after construction began it had to be demolished, targeting the land to the construction of another building.