The elevation of a building is the two-dimensional look at one side. Usually, when a person sees the picture of the outside of a building, they are looking at the elevation of it. There may be more than one elevation of a building. They are labeled by direction. Related to the elevation is the façade. The façade is the outside of one side of a building. Most of the time it is the front of the building that is the façade.
The floor plan is the layout of the levels of a building. This would be on the inside of the building though. The landscape would be on the outside of a building, but it would be the layout of the land. The plants and sidewalks would be part of the landscape.