Classical architecture is characterized by balance, proportion and harmony. It is based on the principles of ancient Greek and Roman architecture and has had a lasting influence on Western architecture and design.

Classical buildings usually have a sense of order and symmetry. They often feature columns, pediments and arches - elements borrowed from ancient Greek and Roman architecture. Columns support the structure and give it a sense of verticality, while pediments and arches give the façade depth and volume.

One of the key features of classical architecture is the use of the classical orders - Doric, Ionic and Corinthian. Each order has its own set of proportions and details, which are used to create a sense of harmony and beauty in the building. These orders are often used on the façade of a building or in the interior to designate different spaces.

Classical buildings also often have a strong sense of hierarchy in their design. This can be seen, for example, in the way the building is organized, with a clear distinction between the base, shaft and column capital, or in the way the façade is divided into different levels or layers.

Another important aspect of classical architecture is the use of symmetry. Buildings are often designed with a central axis or focal point around which the rest of the structure is organized. This creates a sense of balance and order in the building, which is pleasing to the eye.

Classic buildings are also known for the use of natural materials such as stone, marble and wood. These materials are often used in their natural form, without excessive decoration or embellishment, giving classical architecture a sense of simplicity and elegance.

Classical architecture is characterized by balance, proportion and harmony, and the use of classical orders, symmetry, hierarchy and natural materials. All of these elements work together to create buildings that are both beautiful and functional, and which continue to inspire architects and designers to this day.