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Man-made

Roundhouse roof detail, Baltimore & Ohio Railroad Museum, 901 West Pratt Street, Baltimore, MD

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Roundhouse roof detail, Baltimore & Ohio Railroad Museum, 901 West Pratt Street, Baltimore, MD

Americana BO Railroad Baltimore Ohio Railroad Baltimore City CO Railroad CSX Chesapeake and Ohio Railway Chessie System Class 1 railroad MD MPD Maryland National Register of Historic Places North American US USA United States of America architectural detail architecture archives balance balanced beam beams circle circular engine shed gallery geometric geometrical heritage railroad historic historical history in door indoors inside interior internal living history locomotive depot motive power sheds museum preserved preserved railway proportion proportional rafter rafters railroad railway railway terminal rebuilt reconditioned reconstructed reconstruction refurbished regular regularity renovated restored roof rooftop round round house roundhouse running shed stringer strut symmetrical symmetry traction maintenance shop turntable