Rationalist architecture is a design philosophy that emphasizes logic, functionality, and clarity in building forms. Originating in the early 20th century, it seeks to create structures that are both practical and aesthetically pleasing, often using geometric shapes and a limited color palette. This approach values the relationship between a building's purpose and its design, ensuring that every element serves a specific function. Key figures in rationalist architecture include Le Corbusier and Louis Kahn, who focused on the integration of modern materials and technologies. Their work often reflects a commitment to simplicity and order, promoting a sense of harmony between the built environment and its surroundings.