Sidney is home to the 1881 Second Empire courthouse; the 1877 Gothic revival Monumental Building, dedicated to the county's Civil War dead; and the 1918 early-modern People's Federal Savings and Loan Association designed by influential architect Louis Sullivan, which has been designated a National Historic Landmark.

The Big Four Bridge is a local landmark that has carried rail traffic since 1924.
CSX Transportation uses the rail line and bridge as part of the "NYC" division of Conrail, a direct descendant of the New York Central Railroad and Penn Central Transportation.
CSX also operates the north–south rail line, which was better known in earlier years as the Baltimore and Ohio Railroad and later as the Chessie System.

The Graceland Cemetery features monuments and memorials of large concrete angels and other structures and statues.
Sidney is home to the 1881 Second Empire courthouse; the 1877 Gothic revival Monumental Building, dedicated to the county's Civil War dead; and the 1918 early-modern People's Federal Savings and Loan Association designed by influential architect Louis Sullivan, which has been designated a National Historic Landmark.
The Big Four Bridge is a local landmark that has carried rail traffic since 1924. CSX Transportation uses the rail line and bridge as part of the "NYC" division of Conrail, a direct descendant of the New York Central Railroad and Penn Central Transportation. CSX also operates the north–south rail line, which was better known in earlier years as the Baltimore and Ohio Railroad and later as the Chessie System.
The Graceland Cemetery features monuments and memorials of large concrete angels and other structures and statues.
Sidney, Ohio