Like Rome, another famous town built on hills, contemporary San Francisco is built among and around the old city and cities that came before it. Intertwined among modern apartment buildings, condos, offices and shops, is a living museum of the City's glorious and tumultuous past. Reflected in San Francisco's architectural heritage are the boom times, the daring days of the grand and the austere through to the wrecked, the ruined and the rebuilt. Walls talk in the fog city. These great 19th Century and early 20th Century buildings tell secrets of the naughty, the bawdy and the brave in whose footsteps we follow. Some are Historic Landmarks, but many others are not. By appreciating these architectural jewels, the San Francisan can revisit the past and ensure that these great structures continue to share their stories. Additional resources, including Mister SF's Architecture Primer, can be found in Mister SF's City Links.