Until US Bancorp committed to a major lease with naming rights in March 2003, the building was named Library Tower after the Los Angeles Central Library across the street.

The central core structure has a frame that is reinforced in two directions.

The façade, consisting of granite strips alternating with rectangular windows each 6.4 m (21 ft) long, is also designed to endure deformations of up to 6.35 cm (2.5 inch) per floor.

From the 53rd floor up, horizontal forces caused by wind or earthquakes are dampened by two struts, which are each one floor high.

Upon completion this became the tallest building in the world located in a major seismic region; it has since been surpassed by Taipei 101.

The glass crown on top is brightly illuminated at night.

The Bunker Hill Steps, a variation of Rome's Spanish Steps, wrap around the west side of the base, leading up to Bunker Hill.

When completed, became the tallest building on the Pacific coast, surpassing Columbia Center in Seattle.

Tallest building in the United States west of the Mississippi River.

The building was designed to withstand an earthquake of 8.3 on the Richter Scale.

The tower has 4 glass-crowned setbacks, at the 48th, 57th, 61st, and 69th floor levels.

The highest helipad in the world is on the roof.

First building to be destroyed by alien invaders in the 1996 movie "Independence Day".