These six houses are the only ones that still keep their original appearance after a magnitude 8 earthquake in San Francisco, so they are nicknamed Six Sisters. The Victorian residence proves that San Francisco is both cultural, artistic and historical, and interesting from a distance. The Six Sisters are one of the important landmarks of San Francisco along with the Golden Gate Bridge. They have contributed a lot to the city image of San Francisco. Colorful colors, in the blue sky against the more elegant and beautiful.