San Francisco's Secret Subterranean Worlds
While most people think of
San Francisco as a haven for peace-loving hippies, this city by the Bay is actually one of the biggest military defense installations in
America. Go beneath its picturesque hills and uncover the biggest ammunitions depot on the
West Coast before plunging into a deadly arsenal that once stored nuclear missiles with more than six times the destructive power of the atom bomb dropped on
Hiroshima. From the secret
Civil War fortification buried beneath
Alcatraz to the human trafficking tunnels winding below
Chinatown, San Francisco's underground is evidence of its sordid past.
The Presidio of San Francisco (originally, El
Presidio Real de San Francisco or
The Royal Fortress of
Saint Francis) is a park and former military base on the northern tip of the
San Francisco Peninsula in
San Francisco, California, and is part of the
Golden Gate National Recreation Area.
It had been a fortified location since
September 17,
1776, when New
Spain established it to gain a foothold on
Alta California and the
San Francisco Bay. It passed to
Mexico, which in turn passed it to the
United States in
1848. As part of a
1989 military reduction program under the
Base Realignment and Closure (
BRAC) process,
Congress voted to end the Presidio's status as an active military installation of the
U.S. Army. On
October 1,
1994, it was transferred to the
National Park Service, ending 219 years of military use and beginning its next phase of mixed commercial and public use.
In
1996, the
United States Congress created the
Presidio Trust to oversee and manage the interior 80% of the park's lands, with the National Park Service managing the coastal 20%. In a first-of-its-kind structure, Congress mandated that the Presidio Trust make the Presidio financially self-sufficient by
2013, which it achieved 8 years ahead of the scheduled deadline.
The park is characterized by many wooded areas, hills, and scenic vistas overlooking the
Golden Gate Bridge, San Francisco Bay and the
Pacific Ocean. It was recognized as a
California Historical Landmark in 1933 and as a
National Historic Landmark in 1962.
San Francisco Listeni/sæn frənˈsɪskoʊ/, officially the
City and County of San Francisco, is the leading financial and cultural center of
Northern California and the
San Francisco Bay Area.
The only consolidated city-county in
California, San Francisco encompasses a land area of about 46.9 square miles (121 km2) on the northern end of the San Francisco Peninsula, giving it a density of about 17,620 people per square mile (6,803 people per km2). It is the most densely settled large city (population greater than
200,
000) in the state of
California and the second-most densely populated major city in the United States after
New York City. San Francisco is the fourth most populous city in California, after
Los Angeles,
San Diego and
San Jose, and the
14th most populous city in the United States—with a Census-estimated
2012 population of 825,863.
The city is also the financial and cultural hub of the larger
San Jose-San Francisco-Oakland metropolitan area, with a population of 8.4 million.
San Francisco (
Spanish for "Saint Francis") was founded on June 29, 1776, when colonists from Spain established a fort at the
Golden Gate and a mission named for
St. Francis of Assisi a few miles away. The
California Gold Rush of 1849 brought rapid growth, making it the largest city on the West Coast at the time. Due to the growth of its population, San Francisco became a consolidated city-county in 1856. After three-quarters of the city was destroyed by the
1906 earthquake and fire, San Francisco was quickly rebuilt, hosting the
Panama-Pacific International Exposition nine years later. During
World War II, San Francisco was the port of embarkation for service members shipping out to the
Pacific Theater.
After the war, the confluence of returning servicemen, massive immigration, liberalizing attitudes, and other factors led to the
Summer of Love and the gay rights movement, cementing San Francisco as a center of liberal activism in the United States.
Today, San Francisco is ranked 44th of the top tourist destinations in the world, and was the sixth most visited one in the United States in
2011. The city is renowned for its cool summers, fog, steep rolling hills, eclectic mix of architecture, and landmarks including the Golden Gate Bridge, cable cars, the former prison on
Alcatraz Island, and its
Chinatown district. It is also a primary banking and finance center.