in todays generation the kosel is more of a landmark of history for touring which includes stopping to daven there also. then our holiest site in yiddishkeit that must be revered & stood by with awe cause Hashem is closer there then in a shul.
on another note, its also a outside site so it looks welcoming & comfortable to eat at a corner with your family or sit & chat together. its not only used for the two things of davening & touring the site.