Mare Island Light, Nautical landmark in Solano County, United States.
The Mare Island Light features a square tower with a balcony and lantern room, rising 76 feet above the north shore of San Pablo Bay.
The lighthouse, designed by architect Paul J. Pelz, began operations on September 1, 1873, after Congress approved a $20,000 construction fund.
The structure represents California maritime navigation infrastructure from the nineteenth century, with Theresa C. Watson serving as the first head keeper.
The lighthouse ceased operations in 1917 when authorities determined that an offshore light would better serve navigation in the Carquinez Strait.
The fourth-order Fresnel lens directed ships through the complex channels between San Francisco Bay and Mare Island Naval Shipyard.
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