[9] It is also the third-tallest building in a major active seismic region; its structure was designed to resist an earthquake of 8.3 on the Richter scale.

OUE, a Singapore-listed company run by Indonesian billionaire Stephen Riady, acquired the tower and other related assets for $367.5 million.

OUE acquired the 72-floor office building, the adjacent Maguire Gardens park, and a parking lot from a unit of Los Angeles–based real-estate investment trust MPG Office Trust Inc.[10][11] On July 20, 2020, it was announced that Larry Silverstein (Silverstein Properties), the developer of the World Trade Center, purchased the building for reportedly 430 million dollars.

[16] The City of Los Angeles sold air rights to the developers of the tower to help pay for the reconstruction of the library.

On June 16, 2004, the 9/11 Commission reported that the original plan for the September 11 attacks called for the hijacking of ten planes, one of which was to be crashed into the building.

[18] On October 6, 2005, House[discuss] officials stated that the government had foiled a previously undisclosed second plot to crash a plane into the building in mid-2002.

In his televised 2007 State of the Union Address, President George W. Bush asserted that American counterterrorism officials foiled a plot to fly planes into the tower.

[19] According to President Bush, Al-Qaeda leader Khaled Sheikh Mohammed's plan was to use Asian confederates from Jemaah Islamiyah recruited by Islamic militant Hambali for the hijacking.

The 71Above restaurant will remain open while the 54th floor, where people going higher must change elevators, will be turned into a co-working lounge with workstations, food and beverage options, and a catering kitchen for events.