Architecture is the art and process of planning, designing, and construction. Architecture works are often in the form buildings, which serve all kinds of purposes, from residential use to economic use to civilian use; but usually, they are either cultural symbols or just works of art. Historical civilizations are often known and identified by their surviving architectural achievements, such as Greece and Rome. The word “Architecture” includes many meanings (though there is no official meaning), such as: The main and most used term to describe buildings, monuments, and other infrastructures.