ArcGIS Pro allows you to easily add 3D maps to your projects. 3D maps are also referred to as scenes in ArcGIS Pro. When you add a new 3D map or scene to a project, you must first choose which type or view mode you wish to use. ArcGIS Pro supports two: global and local.

A global scene is designed to support large areas where the curvature of the earth has a noticeable impact. This might be used to show the track of a hurricane or the path of a gas pipeline, which crosses many states or countries.

The preceding image is an example of a global scene, which shows the airline flight paths over the east coast of the United States. The curvature of the earth certainly has an impact on these over long distances. Because of the extent of the area covered by a global scene, these typically use a geographic coordinate system.

A local scene is designed to display smaller areas where the curvature of the earth has less impact and most often uses a projected coordinate system. A local scene might...