{"name":"Golden Gate Bridge","city":"San Francisco, California","canonical_url":"https://gydeinfo.com/san-francisco/places/golden-gate-bridge/","markdown_url":"https://gydeinfo.com/san-francisco/places/golden-gate-bridge.md","updated_at":"2026-06-18T23:19:33.560625+00:00","facts":[{"claim":"The cloud layer that frequently obscures the Golden Gate Bridge is known as **Karl the Fog**, a beloved local nickname for San Francisco’s famous marine layer; it is not a person, myth, or just weather, but a full-blown San Francisco personality.","citation":"https://sanfranciscojeeptours.com/blog/san-francisco-icons/who-is-the-mysterious-karl-the-fog-often-seen-hanging-out-around-the-golden-gate-bridge/","source_title":"Carl the Fog","source_type":"manual","allowed_use":"anecdote","retrieved_at":"2026-06-18T22:55:29.686597+00:00"},{"claim":"An **anonymous Twitter account** first christened the Bay Area fog as “Karl” in **2010**, inspired by the giant, friendly monster in the 2003 film *Big Fish*, and the name was chosen because the giant was misunderstood, just as Karl the Fog can empathize.","citation":"https://sanfranciscojeeptours.com/blog/san-francisco-icons/who-is-the-mysterious-karl-the-fog-often-seen-hanging-out-around-the-golden-gate-bridge/","source_title":"Carl the Fog","source_type":"manual","allowed_use":"anecdote","retrieved_at":"2026-06-18T22:55:29.686597+00:00"},{"claim":"The Twitter account **@KarlTheFog** popped into existence in **August 2010**, inspired by parody accounts on Twitter—specifically one that parodied the BP public relations department after the Deepwater Horizon oil spill—and has since amassed **more than 348,000 followers**.","citation":"https://sanfranciscojeeptours.com/blog/san-francisco-icons/who-is-the-mysterious-karl-the-fog-often-seen-hanging-out-around-the-golden-gate-bridge/","source_title":"Carl the Fog","source_type":"manual","allowed_use":"anecdote","retrieved_at":"2026-06-18T22:55:29.686597+00:00"},{"claim":"San Francisco’s fog is scientifically classified as **advection fog**, which moves horizontally and forms when moist, warm air passes over colder water due to upwelling, creating tiny liquid droplets that are drawn through the Golden Gate and idle over coastal cities like San Francisco.","citation":"https://sanfranciscojeeptours.com/blog/san-francisco-icons/who-is-the-mysterious-karl-the-fog-often-seen-hanging-out-around-the-golden-gate-bridge/","source_title":"Carl the Fog","source_type":"manual","allowed_use":"anecdote","retrieved_at":"2026-06-18T22:55:29.686597+00:00"},{"claim":"**Fog** is basically water droplets suspended in the air, mixed with dust and other microscopic particles; when enough droplets accumulate, fog is born, and Karl is the name assigned to this local weather phenomenon by a social media account that has become a bonafide Bay-lebrity with **more than 146,000 followers on Twitter and over 200,000 on Instagram**.","citation":"https://sanfranciscojeeptours.com/blog/san-francisco-icons/who-is-the-mysterious-karl-the-fog-often-seen-hanging-out-around-the-golden-gate-bridge/","source_title":"Carl the Fog","source_type":"manual","allowed_use":"anecdote","retrieved_at":"2026-06-18T22:55:29.686597+00:00"},{"claim":"While the name “Karl” is widely used today, **one local reader claims the name “Carl” was used back in the 1980s**, though the current usage of “Karl” is definitively tied to the 2010 Twitter account and the misunderstood giant from *Big Fish*.","citation":"https://sanfranciscojeeptours.com/blog/san-francisco-icons/who-is-the-mysterious-karl-the-fog-often-seen-hanging-out-around-the-golden-gate-bridge/","source_title":"Carl the Fog","source_type":"manual","allowed_use":"anecdote","retrieved_at":"2026-06-18T22:55:29.686597+00:00"},{"claim":"The district is the operating authority for the bridge, indicating the official site for bridge operations and visitor information is goldengate.org.","citation":"https://www.goldengate.org","source_title":"Golden Gate Bridge, Highway and Transportation District | Golden Gate","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-18T22:50:51.101361+00:00","fact_type":"history","as_of":"2026","confidence":0.9},{"claim":"Official toll information is directed to the Golden Gate Bridge district’s website.","citation":"https://www.goldengate.org","source_title":"Golden Gate Bridge, Highway and Transportation District | Golden Gate","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-18T22:50:51.101361+00:00","fact_type":"hours","as_of":"2026","confidence":0.92},{"claim":"There is a southbound toll on U.S. 101 crossing the Golden Gate Bridge.","citation":"https://511.org/driving/bridges/golden-gate-bridge","source_title":"Golden Gate Bridge - 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