It seems you run a Demo version of X-Plane. If you are using a full version of X-Plane, you can try install a second (fresh) copy of X-Plane and check if there is a full scenery. You can do it from X-Plane Installer/Updater and clicking "Install A Second Copy of X-Plane" button. You can also add or remove scenery by selecting a button in an installer program on DVD 1 disc.