This site is being deprecated.
Please see the official X‑Plane Support page for help.
Due to the immense number of global airports in X-Plane, not all of them have detailed scenery. As Rishi notes, there are a lot of things you can download that can improve the "out of the box" sim. X-Plane.org is a good site for freeware aircraft and scenery. Check out the Airport Scenery Gateway to see if specific default airports have improved scenery or not (artist WEDbot is default scenery with little to no buildings).
This site is no longer being actively maintained.