Alcatraz Island Lighthouse
E17238
Alcatraz Island Lighthouse is a historic beacon on Alcatraz Island in San Francisco Bay, notable as the first lighthouse built on the U.S. West Coast and a key aid to navigation for ships entering the bay.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Alcatraz Island Lighthouse canonical | 2 |
| Alcatraz Island Light | 1 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic structure
ⓘ
lighthouse ⓘ navigational aid ⓘ |
| associatedWith |
Alcatraz Island
ⓘ
surface form:
Alcatraz Federal Penitentiary
United States Lighthouse Service ⓘ |
| bay | San Francisco Bay ⓘ |
| category |
Buildings and structures in San Francisco Bay
ⓘ
Lighthouses in California ⓘ Transportation infrastructure in San Francisco Bay Area ⓘ |
| constructionMaterial |
concrete
ⓘ
reinforced concrete ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentTowerCompleted | 1909 ⓘ |
| distinction | oldest operating lighthouse on the U.S. West Coast ⓘ |
| function |
guides ships into San Francisco Bay
ⓘ
warns of hazards around Alcatraz Island ⓘ |
| heritageStatus | listed as a contributing structure to the Alcatraz Island National Historic Landmark ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| locatedIn |
Alcatraz Island
ⓘ
California, United States ⓘ
surface form:
California
San Francisco Bay ⓘ San Francisco ⓘ
surface form:
San Francisco, California
United States of America ⓘ
surface form:
United States
|
| locatedOn | rocky outcrop of Alcatraz Island ⓘ |
| maintainedBy | United States Coast Guard ⓘ |
| managedBy | United States Coast Guard ⓘ |
| marking |
gray lantern
ⓘ
white tower ⓘ |
| near |
Golden Gate Bridge
ⓘ
surface form:
Golden Gate
Port of San Francisco ⓘ
surface form:
San Francisco waterfront
|
| openToPublic | no ⓘ |
| originalConstructionCompleted | 1854 ⓘ |
| ownedBy |
United States government
ⓘ
surface form:
United States federal government
|
| partOf |
Alcatraz Island
ⓘ
surface form:
Alcatraz Island National Historic Landmark
Golden Gate National Recreation Area ⓘ |
| purpose | maritime safety ⓘ |
| region | West Coast of the United States ⓘ |
| replaced | original 1854 lighthouse tower ⓘ |
| role |
historical landmark
ⓘ
symbol of maritime history of San Francisco Bay ⓘ |
| significance |
aid to navigation for ships entering San Francisco Bay
ⓘ
first lighthouse on the U.S. West Coast ⓘ |
| towerShape |
square tower with gallery and lantern
ⓘ
tapered square tower ⓘ |
| viewableByPublic | yes ⓘ |
| visibleFrom |
Port of San Francisco
ⓘ
surface form:
San Francisco waterfront
ferries crossing San Francisco Bay ⓘ |
| yearFirstLit | 1854 ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Alcatraz Island Light