Available with 3D Analyst license.
A 3D bookmark identifies a particular camera perspective that you want to save and refer to later. For example, you might want to create a 3D bookmark that identifies a certain view of a study area. That way, as you navigate through your 3D view, you can easily return to the study area view by accessing the bookmark. You can also use 3D bookmarks to highlight areas in your 3D view you want others to see.
The list of bookmarks is available to all viewers in a 3D document. If you create a bookmark in a viewer, it will be added to a central list where it can be applied to any viewer.
3D bookmarks are supported in both ArcGlobe and ArcScene.