What is formed at the outer edge of the roof in structures with a sloped roof in the Doric order?

The geison, also known as cornice, is a crucial architectural feature at the outer edge of the roof in structures built in the Doric order. This architectural element serves both a functional and aesthetic purpose. Functionally, the cornice helps to direct water runoff away from the building, protecting the structural elements below. Aesthetically, it provides a visually striking transition between the vertical plane of the wall and the horizontal plane of the roof.

In the Doric order, which is characterized by its simplicity and strength, the cornice is typically a projecting ledge that adds a sense of weight and solidity to the structure. It often features a simple, unadorned design that aligns with the overall restrained aesthetic of the Doric style, contributing to the building's grandeur without unnecessary embellishment.

Other architectural components mentioned, such as the frieze, the architrave, and the column capital, play important roles within the overall organization of classical orders, but they are positioned differently in relation to the roof. The frieze is found above the architrave and can also be part of the entablature but does not specifically mark the edge of the roof. The architrave is the supporting element directly above the columns, while