The Westin St. Francis is a historic luxury hotel located on Powell and Geary Streets on Union Square in San Francisco, California. The two twelve-story south wings of the hotel were built in 1904, and the double-width north wing was completed in 1913, initially as apartments for permanent guests. The 32-story, 120 m (390 ft) tower to the rear completed in 1972 features exterior glass elevators that offer panoramic views of the bay and the square below, making the St.