One Eleven Congress, formerly One Congress Plaza, is a skyscraper in Downtown Austin, the state capital of Texas in the United States. Standing 397 feet (121 meters) tall and containing 30 floors, the building is the 17th tallest in Austin. The building contains a sunken plaza, which include trees, a food hall, water features, and park benches, as well as the location for the AMOA Art Show. The building is owned by Cousins Properties of Atlanta, Georgia. One Eleven Congress has 548,823 square feet (50,987.3 m2) of space and is one of Austin's waterfront skyscrapers.