Land and most things attached to the land, such as buildings and vegetation. Growing crops, since they are physically attached to the soil, are generally considered real property. The definition of "land" includes not only the surface of the earth, but also everything above and beneath it. Thus, the ownership of a tract of land theoretically includes both the airspace above it and the soil from its surface to the center of the earth.
Definition provided by the International Risk Management Institute (IRMI) Glossary of Insurance.
