One possible version:

Dear Editor,

     I am Wang Ping, a senior-three student. I'm writing to tell your newspaper about something that surprises

me. Nowadays no matter which tourist attraction we visit, we can always see such words as "I have visited

this place" carved in walls or trees. Obviously, these words don't go well with the surroundings. What's more,

it ruins the ancient buildings or spoils our natural environment. The reason for this is probably that some tourists

don't have the sense of protecting our cultural heritage. But I think that we should have strict rules to discipline

those tourists' bad behavior and they should be forced to pay for the damage. I sincerely hope that your

newspaper can help urge all tourists to behave themselves while travelling. 

      Best wishes.

                                                                                                                                     Yours sincerely,

                                                                                                                                     Wang Ping