Typically, the structural hierarchy of a system differs from the hierarchy of the functional requirements. With architecture views you can sketch the system based on different hierarchies. For example, you can author a system using the requirements. This allows you to better understand what components you need to satisfy your requirements while not necessarily focusing on the structure.
|Base class for view components|
|Shadow of a component from the composition in a view|
|View components in an architecture view|
|View component within an architecture view|
|Base class of all view elements|