branch occupies the eastern half of that floor). The east and west sidewalks slope downward to Wilshire Blvd. with steps leading up to the south entrance. Elevators on the south side of BL and escalators on the north side of BL both go up to the ML (Main Lobby) level, where additional banks of elevators reach floors numbered 4-62. No 2nd floor exists, though the height of ML is twice that of BL (hence, this is a 62-story tower with only 61 floors). The BL/ML elevator also goes down to underground levels LBL (Lower Bank Level), LL1 (Lower Level 1 with evacuation tunnel used by firefighters in 1988), and LL2 (valet parking garage). See also List of tallest buildings in Los Angeles Aon Center (Chicago) References Further reading External links First Interstate Bank Fire Los Angeles Fire Department Historical Archive Skyscraper office buildings in Los Angeles Buildings and structures in Downtown Los Angeles Wilshire Boulevard Office buildings completed in 1973 1973 establishments in California 1970s architecture in the United States Charles Luckman buildings Leadership in Energy and Environmental Design gold certified buildings Financial District, Los Angeles