One Embarcadero Center is an class-A office skyscraper in the Financial District of San Francisco, California. The building is part of the Embarcadero Center complex of six interconnected buildings and one off-site extension. The skyscraper, completed in 1971, stands 569 ft tall with 45 stories without its flagpole. One Embarcadero Center is the second tallest building out of the entire complex, standing at slightly shorter than Four Embarcadero Center, which is the tallest in the complex.