1, symmetrical buildings are more serious, highlighting the sense of solemnity, and are often used in government buildings. Such as the Great Hall of the People.

2, often arranged on the central axis of the group, is the visual center and landscape focus, playing a leading role. Such as a library or an office building located on the axis of a university campus.

3, with a sense of classical beauty and order, because no matter in Central Europe, classical architecture is mostly symmetrical.

By-products: the facade is easy to draw and symmetrical.