The Hilton Austin Hotel is the largest and tallest hotel in Austin, Texas at 115 m (377 ft) tall with 31 stories. Designed by Ellerbe Becket Inc and Susman Tisdale Gayle Architects (now STG Design, Inc), the building broke ground on July 10, 2001 and topped out officially on January 17, 2003, a span of 1 year, 6 months, and 7 days. The largest ballroom in Austin also is located in this 31 story monolith.