Louis Kahn was a prominent American architect known for his monumental and monolithic structures. His designs often emphasized the interplay of light and space, creating a unique atmosphere in his buildings. Notable works include the Salk Institute and the Kimbell Art Museum, which showcase his innovative use of materials and forms. Kahn's architectural philosophy focused on the idea that buildings should express their purpose and the materials used in their construction. His work has had a lasting impact on modern architecture, influencing generations of architects and designers who admire his ability to blend functionality with artistic expression.