California Center

345 California Center is a 48-story office tower in the financial district of San Francisco, California. Completed in 1986, the 211.8 m tower is the fifth tallest in the city after the Salesforce Tower, Transamerica Pyramid, 181 Fremont, and 555 California Street if the spires are included. It was originally proposed to be 30 m taller. The building was developed by Norland Properties, a private real estate investment firm led by Hany Ben-Halim.

345 California is in the middle of a block with historic buildings on each of the four corners. Initially planned as condominiums, the top 11 floors of the building are the Four Seasons Hotel San Francisco at Embarcadero, located in twin towers set at 45-degree angles to the rest of the building. Several glass skybridges offer views of the San Francisco Bay Area. The hotel has the street address 222 Sansome, with a different entrance.