Otoe County Nebraska (Vacant / Not In Use) has 5 places on the National Register of Historic Places including 5 places of Statewide significance. Significant places include Bridge, Grand Army of the Republic (G.A.R.) Memorial Hall, Lee, George F., Octagon Houses, Little Nemaha River Bridge and Wolf Creek Bridge.
Some of the country's most noteable architects helped create the Otoe County places including George Lee Fisher, Buckeye Bridge Works, Harry Lawrie, George F. Lee, King Iron Bridge Co. and King Iron Bridge & Manufacturing Co.. Prominent architectural styles found in Otoe Country are Romanesque.