The historic 11-story Southern Pacific Building, also known as "The Landmark", was completed in 1916, and incorporated into the development in 1976 that includes the 43-storey 172 metres (564 feet) Spear Tower, and the 27-storey, 111 metres (364 feet) Steuart Tower.

At over 1.5 billion pounds, the complex is considered the heaviest development in San Francisco.

The plaza was first owned by Morgan Stanley Real Estate and Paramount Group.

An $88 million renovation brought modern amenities such as air conditioning and hot water to the building.

It later hosted the headquarters of Del Monte Foods for ten years on the building's top three floors.