At 280 feet (90 m), the 21-story Milam Building in downtown San Antonio, Texas was the tallest brick and reinforced concrete structure in the United States when it opened in 1928, as well as the first high-rise air-conditioned office building. The building was designed by George Willis, engineered by M.L. Diver, and constructed by L.T. Wright and Company. The building was named in honor of the Republic of Texas historical figure Benjamin Milam, noted for his leadership during the Texas Revolution. In keeping with that motif, the only flag that flies atop the tower is the Lone Star flag.