War Memorial Opera House Japanese sneak attack and bombing of Pearl Harbor, Hawaii, marking the American entry into World War II in December 1941, the households was regularly blacked out and performances were monitored by air raid wardens. In spring of 1945, the United Nations had its San Francisco Conference (UN Conference on International Organization) first organizing assembly there. The UN Charter was later drafted and signed in the Herbst Theatre next door. Six years later in 1951, the Treaty of San Francisco, declaring peace with Japan was drafted and signed here and in the Herbst Theatre. During the years of Kurt Herbert Adler's
San Francisco in the 1970s as the San Francisco Sound was performed live and recorded by San Francisco-based rock groups of the mid-1960s to early 1970s. It was associated with the counterculture community in the city at the time. San Francisco was the cradle of the pornography industry in the United States in the 1970s, and led to a dramatic growth of strip clubs, adult movie theaters, "peep show" booths, and sex shops downtown, as well as to the creation of the first feminist advocacy groups for sex workers. Many skyscrapers were built in the city during this period. The city is also associated with