What is worth preserving?

We are presented with the question “what is worth preserving?” in the third chapter of Writing About Architecture. This question is regarding what buildings or structures should be preserved, whether its their historical, artistic, or sentimental value. Most buildings or structures that are landmarks are preserved due to their historical value, such as libraries, churches, museums, etc. I believe that landmarks should remain unaltered to preserve their historical value, along with their artistic value because the person who made that building or structure made it that way for a reason. I also believe that the decision to preserve something of sentimental value would be in the hands of whomever that structure has effected, because not all buildings or structures have had an impact on everyone.