Isola di Alcatraz — La Rocca, Penitenziario Federale e il Tour della Baia
Alcatraz Island — the 22-acre island in the middle of San Francisco Bay, 2.4 kilometres offshore, that served successively as a US Army fortification (1850s), a military prison (1861-1934), and the federal penitentiary known as 'The Rock' (1934-1963, housing America's most dangerous and high-profile federal prisoners including Al Capone, George 'Machine Gun' Kelly, and Robert Stroud the 'Birdman of Alcatraz') — is the most visited site in the entire National Park System after the Washington Monument.
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Alcatraz Penitentiary — The Rock That Held Capone and Birdman
Alcatraz Federal Penitentiary (Alcatraz Island, 1.5 miles offshore, operated 1934–1963, now National Park Service, $41.25 adult including ferry, daily departures from Pier 33) housed Al Capone (Cell AZ-85, held 1934–1938 for tax evasion, developing syphilitic dementia during his imprisonment), Robert Stroud (the 'Birdman of Alcatraz', held without his birds, who were at Leavenworth), Machine Gun Kelly, and George 'Creepy Karpis' — the island's audiotour (voiced by former guards and inmates) won a Peabody Award in 1993.
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The Great Escape of 1962 — The Only Unsolved Alcatraz Escape
The 1962 Alcatraz escape (June 11, Frank Morris and brothers John and Clarence Anglin) is the only Alcatraz escape where the prisoners were never confirmed dead or recaptured — the three men spent months chiseling out of their cells with spoons, constructed papier-mâché heads to place in their beds, fabricated an inflatable raft from stolen raincoats, and were never seen again; the FBI case (unsolved since 1979 when it was officially closed) remains active due to a 2013 letter (authenticity disputed) from an 83-year-old who claimed to be John Anglin.
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SF Bay Area Natural History — Alcatraz as Bird Colony
Alcatraz island (the name from the Spanish for brown pelican, alcantrazes) is a designated bird sanctuary — the Western Gull colony (200+ breeding pairs) uses the island's cell blocks and parade ground as nesting habitat; the Black-crowned Night Herons, Brandt's Cormorants, and Pigeon Guillemots also breed; the ecology trail (free with park access, less visited than the penitentiary) documents the island's natural history; the invasive plant species (first cultivated by the warden's wife in 1946, now a National Park restoration project) are being gradually replaced with native California coastal scrub.
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Ferry Building Embarcadero — The View of the Bay and Its History
The Ferry Building (1 Ferry Building, Embarcadero, 1898, A. Page Brown architect, Beaux-Arts tower, the primary San Francisco transit hub until the Bay Bridge closed the ferry routes in 1939) was restored in 2003 as a food hall — the Saturday Farmers Market (Embarcadero, 8am–2pm, the finest outdoor market in California) and the permanent tenants (Acme Bread, Cowgirl Creamery, Blue Bottle Coffee, Hog Island Oyster Bar) make it the destination for Bay Area food culture; the ferry service (to Sausalito, Tiburon, Oakland, Vallejo) still operates from the terminal.
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Bay Cruises — Under the Golden Gate from the Water
Alcatraz Cruises and Blue & Gold Fleet (both departing from Pier 33 and 41) offer bay tour boats that circumnavigate the island and pass under the Golden Gate Bridge — the 1-hour bay tour ($34 adults, no island landing) is the fastest way to see Alcatraz, the Bay Bridge, and the Golden Gate from the water; the boat journey under the Golden Gate (clearance 220 feet, the bridge appears impossibly low from water level) is the most viscerally dramatic Bay Area experience; kayaking under the Golden Gate is available with California Canoe & Kayak (Sausalito, $75/half day).
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Angel Island — Immigration Station and Cold War Missile Site
Angel Island State Park (accessible by ferry from Tiburon and San Francisco, $18.50 roundtrip) is the most historically layered island in San Francisco Bay — the Angel Island Immigration Station (1910–1940, the 'Ellis Island of the West' for Asian immigrants, poetry carved into the detention barrack walls by Chinese detainees is its primary historical artifact), the Civil War-era Fort McDowell, and the Nike Missile Site (Cold War surface-to-air missiles aimed at Soviet bombers, operated 1956–1963) coexist on a single 750-acre island accessible only by foot and bicycle.