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(Hartford County, Connecticut)5.25 mile navigation canal
Oneida Street Station
(Milwaukee County, Wisconsin)Repurposed, this neoclassical revival building is listed on both the NRHP and is listed by the American Society of Mechanical Engineers as a National Historic Mechanical Engineering Landmark.
(Mayes County, Oklahoma)Dam carrying S.H. 28 over Neosho (Grand) River between Langley & Disney.
Port Washington Power Plant
(Ozaukee County, Wisconsin)The world's most efficient coal-fired power plant at the time of its construction and for many years afterwards.