U.S. Bank Tower, formerly Library Tower and First Interstate Bank World Center, is a 310.3 m (1,018 ft) skyscraper at 633 West Fifth Street in downtown Los Angeles, California.
It is the tallest building in California, the tenth-tallest in the United States, the tallest west of the Mississippi River, and as of November 2010, the 47th tallest building in the world. Because local building codes require the building to have a helipad, it is also the tallest building in the world with a roof-top heliport. Until the construction of Taipei 101, it was also the tallest building in a major active seismic region; its structure was designed to resist an earthquake of 8.3 on the Richter scale. It consists of 73 stories above ground and two parking levels below ground. Construction began in 1987 with completion in 1989. The building was designed by Henry N. Cobb of the architectural firm Pei Cobb Freed & Partners and cost $350 million to build. It is one of the most recognizable buildings in Los Angeles, often used in establishing shots for the city in films and television programs.
The building is also known as Library Tower because it was built as part of the $1 billion Los Angeles Central Library redevelopment area following two disastrous fires in 1986, and its location across the street. The City of Los Angeles sold air rights to the developers of the tower to help pay for the reconstruction of the library. The building was also known for a time as First Interstate Bank World Center but the name Library Tower was restored after First Interstate Bancorp merged with Wells Fargo Bank. In March 2003 the property was leased by U.S. Bancorp and the building was renamed U.S. Bank Tower. Residents, however, generally continue to refer to it as Library Tower.