Concrete architecture refers to the design and construction of buildings and structures primarily using concrete as the main material. This approach allows for a wide range of shapes and forms, making it popular for both functional and aesthetic purposes. Brutalism, a style that emerged in the mid-20th century, is a notable example of concrete architecture, characterized by its bold, raw concrete surfaces. The durability and strength of concrete make it suitable for various applications, from residential homes to large-scale infrastructure like bridges and skyscrapers. Additionally, reinforced concrete, which incorporates steel bars, enhances the material's tensile strength, allowing for innovative designs and longer spans in construction.