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2. Thunder Bay Island Light - Wikipedia

   en.wikipedia.org/wiki/Thunder_Bay_Island_Light

   This 40-foot (12 m) 1830s light tower was raised 10 feet (3.0 m)) to a height of 50 feet (15 m) in 1857, and sheathed with brick. A fourth order Fresnel lens was installed. [1] This 1857 light tower is the current Thunder Bay Island Light, although the tower has been further altered and is currently 63 feet (19 m) high. [3]

3. The Bay Lights - Wikipedia

   en.wikipedia.org/wiki/The_Bay_Lights

   The Bay Lights was a site-specific monumental light sculpture and generative art installation on the western span of the San Francisco–Oakland Bay Bridge, designed to commemorate the 75th anniversary of its opening. The installation by light artist Leo Villareal included 25,000 individual white LEDs along 1.8 miles (2.9 km) of the cables on ...

4. Green Bay Harbor Entrance Light - Wikipedia

   en.wikipedia.org/.../Green_Bay_Harbor_Entrance_Light

   Location: approaches to Green Bay, Wisconsin harbor: Coordinates: 1]: Tower; Constructed: 1935 [2]: Foundation: Concrete pier: Construction: Steel plate: Automated: 1979 [2]: Shape: white conical tower on cylindrical base: Light; Focal height: 72 feet (22 m): Lens: fourth order Fresnel lens: Range: 12 nautical miles (22 km; 14 mi): Characteristic: occ. red 4s: The Green Bay Harbor Entrance ...