Nob Hill is an affluent district, home to many of the city's old money families. The area was settled in the rapid urbanization happening in the city in the late 19th century. Because of the views and its central position, it became an exclusive enclave of the rich and famous on the west coast who built large mansions in the neighborhood. This included prominent tycoons such as Leland Stanford and other members of The Big Four. The neighborhood was completely destroyed in the 1906 earthquake and fire, except for the granite wall that had surrounded the Stanford and Hopkins mansions; the Huntington mansion was the only one of the hill's landmark palatial residences to survive, until it was demolished in the 1960s. The mansion of tycoon James Flood, though gutted by fire, was rebuilt and stands to this day as the headquarters of the Pacific-Union Club. While the neighborhood was able to maintain its affluence following the quake, many of the rich rebuilt their mansions further west in Pacific Heights and Cow Hollow. Many of the exclusive hotels now in the area were built over the ruins of the former mansions.