Louis Kahn was an American architect born in 1901 who is renowned for his innovative use of materials like concrete. Some of his most famous works include the Kimbell Art Museum in Fort Worth, Texas, and the Salk Institute in La Jolla, California. The Kimbell Art Museum features a series of vaulted galleries made of reinforced concrete that provide natural light. The Salk Institute consists of a cluster of laboratories, residences, and meeting spaces arranged around a central courtyard fountain. Kahn designed the buildings using exposed concrete and innovative structural systems to achieve open floor plans unobstructed by columns.