Designed by famed Texas architect Atlee Ayres in 1926 as the San Antonio Municipal Auditorium, in 2014 the remodeled and expanded Tobin was re-opened as a world-class performance venue. The main space, the 800-seat H-E-B Performance Hall, has a seemingly magical capacity to adjust stage and seat configurations; two smaller performance spaces were added in the redesign, one inside the building and one outside adjacent to the River Walk, which can be used independently and concurrently to the main hall. The Tobin functions as the main home for the San Antonio Symphony, San Antonio Chamber Choir, OPERA San Antonio, and Ballet San Antonio, as well as smaller arts groups; it has hosted acts such as Paul McCartney, Wilco, and David Byrne in the past few years.