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gptkbp:instance_of
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gptkb:lighthouse
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gptkbp:accessibility
|
accessible by ferry
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gptkbp:architectural_style
|
Victorian
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gptkbp:associated_with
|
gptkb:Alcatraz_Federal_Penitentiary
|
|
gptkbp:automated
|
1934
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gptkbp:characteristic
|
white flash every 5 seconds
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gptkbp:constructed_in
|
1854
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gptkbp:construction_material
|
brick
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gptkbp:coordinates
|
37.8265° N, 122.4220° W
|
|
gptkbp:cultural_significance
|
featured in films and literature
|
|
gptkbp:current_status
|
preserved
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|
gptkbp:decommissioned
|
gptkb:1963
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|
gptkbp:defense
|
gptkb:George_D._Mc_Culloch
|
|
gptkbp:design
|
conical tower
|
|
gptkbp:famous_for
|
its role in maritime navigation
|
|
gptkbp:featured_in
|
tourist brochures
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gptkbp:height
|
84 feet
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|
gptkbp:historical_event
|
site of many shipwrecks
|
|
gptkbp:historical_significance
|
part of maritime history
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Alcatraz Island Lighthouse
|
|
gptkbp:influenced
|
lighthouse design in the U. S.
|
|
gptkbp:influenced_by
|
European lighthouse designs
|
|
gptkbp:is_a_focal_point_for
|
100 feet
|
|
gptkbp:is_maintained_by
|
gptkb:National_Park_Service
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gptkbp:is_visible_from
|
20 nautical miles
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gptkbp:is_visited_by
|
thousands of tourists annually
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gptkbp:known_for
|
its ghost stories
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|
gptkbp:lens_type
|
Fresnel lens
|
|
gptkbp:lighting
|
1854
electric light
|
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gptkbp:location
|
gptkb:Alcatraz_Island
|
|
gptkbp:notable_feature
|
white and black stripes
|
|
gptkbp:operated_by
|
gptkb:U._S._Lighthouse_Service
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|
gptkbp:operational_status
|
inactive
|
|
gptkbp:original_purpose
|
gptkb:navigation
|
|
gptkbp:owner
|
gptkb:U._S._Coast_Guard
|
|
gptkbp:part_of
|
gptkb:Golden_Gate_National_Recreation_Area
California Historic Landmark
|
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gptkbp:part_of_a_complex
|
gptkb:Alcatraz_Island_Historic_District
|
|
gptkbp:renovated
|
2000s
|
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gptkbp:renowned_for
|
its scenic views
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gptkbp:replaced_by
|
modern navigation systems
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gptkbp:significance
|
gptkb:historical_landmark
|
|
gptkbp:surrounding_nature
|
gptkb:San_Francisco_Bay
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|
gptkbp:tourist_attraction
|
yes
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gptkbp:bfsParent
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gptkb:Alcatraz_Island
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gptkbp:bfsLayer
|
4
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