People make many buildings. 


People make many buildings. 


Architecture is the art of designing buildings. 


Architecture is the art and science of designing buildings and other structures. 

Creating a building involves many careful steps. First, an architect must conceive and plan the idea. They spend time sketching and designing the shapes of the structure. Next, they must use civil engineering techniques to make the design work. This includes choosing the right materials like stone, wood, or concrete. 
Humans have been building things since prehistoric times. 
Many famous thinkers have written about how to build well. 
Architecture changes as the world changes. 

Architecture is the specialized study and practice of designing structures, especially those meant for people to inhabit. 
The mechanism of architecture involves a complex chain of cause and effect. It begins with a need, such as the requirement for shelter, security, or worship. Designers must then balance these needs against available means, which include building materials and technical skills. The process often starts with vernacular architecture, which is a non-academic style based on local cultural traditions. This early form of building relies on trial and error to find successful methods. Once a method works, it is replicated to create more stable structures. As knowledge becomes formalized, the craft evolves into the professional practice of architecture we see today.
Throughout history, different theories have defined what makes a building successful. In the 1st century BC, the Roman architect Vitruvius wrote the earliest surviving treatise, *De architectura*. He proposed that every good building must embody three essential principles: *firmitas*, *utilitas*, and *venustas*. In modern English, these are durability, utility, and beauty. This means a structure must stand up robustly, serve its intended purpose, and be aesthetically pleasing. 
Architectural styles have shifted dramatically across different eras and continents. In ancient Egypt and Mesopotamia, architecture often focused on monumentality to represent political power or the divine. 

The 20th century brought even more radical changes to the built environment. After World War I, modern architecture emerged as an avant-garde movement. Architects sought a new style to meet the social and economic needs of the middle and working classes. They utilized modern techniques, new materials, and simplified geometric forms.
Today, the field must also address the health of our planet through sustainable architecture. This concept emerged in the late 20th century as a response to environmental needs. A sustainable building is designed to be environmentally friendly in several ways. It considers the production of its materials and its impact on the surrounding natural environment. It also manages the demands placed on nature for heating, cooling, ventilation, and water use. 
Architecture serves as a profound connection between humanity and its environment. It is more than just the act of construction; it is a way of expressing culture. 
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