More than a neighborhood, San Francisco's Nob Hill encapsulates some of the major elements of the city's history. Early European settlers' cattle grazed on the windy hill, and with the Gold Rush of 1849, it became a lookout point as ships arrived daily, bringing thousands to San Francisco. Within the next 40 years, the moguls of the Central Pacific Railroad, along with other magnates, built spectacular residences atop Nob Hill, which became a focal...