High Quality Content by WIKIPEDIA articles! 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 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. Francis one of the largest hotels in the city, with more than 1,200 rooms and suites.