The Jeremiah Hamilton Building is an attractive and historic triangular building at the corner of 11th and Red River. It is thought to be one of only three stone triangular buildings still standing today in Texas. It houses the Box Office and Facilities Office of the Austin Symphony. Jeremiah Hamilton, one of nine black legislators serving in the 12th Texas Legislature from 1869-1871, built it in 1871. A visit to the historic location is free, and visitors can visit the other three homes in the Square as well. The adjacent amphitheater is the home of the Symphony. See the website for shows and times.