The Austonian is a residential skyscraper in Downtown Austin, Texas. At 683 ft tall with 56 floors, the building is the tallest building in Austin upon its completion in 2009, overtaking the 360 Condominiums. The tower will also be the tallest all-residential building in the state of Texas and Texas' tallest building outside of Dallas and Houston. Also, it is the tallest all residential building west of the Mississippi. Currently, the building is topped out at the 56th floor. The 53rd floor was taller than the previous tallest, 360 Condominiums.