The first skyscraper to begin construction after Sept. 11 broke ground at Fourth and Brazos streets in downtown Austin. Designed by Duda/Paine and HKS, it utilizes a unique blue-glass skin and its crown is often lit with different colors for special occasions. At the time of its completion, it was the tallest building in the city and one of the first glassy towers in the skyline. It serves as the headquarters for the San Antonio-based Frost National Bank and is known by locals for resembling an owl when viewed at an angle, with the pointed crown resembling owl feathers and the Frost Bank logo looking like the eyes.