original: Pompeii was transformed into a much more public and open place.
simplifications: Pompeii was made into a more public and open place. Pompeii was turned into a more public and open place. Pompeii was turned into a more public place. Pompeii became more open to the public. Pompeii became much more public and open. Pompeii was changed into a  public and open place. Pompeii turned into a more public and open place. Pompeii was changed into a public place. Pompeii was changed into a more public and open place. Pompeii has been turned into a much more public and open place.