Middletown, Michigan

Caledonia Charter Township is a charter township of Shiawassee County in the U.S. state of Michigan. The population was 4,475 at the 2010 census.

The John N. Ingersoll House is a single-family home located at 570 West Corunna Avenue in Corunna, Michigan. It was listed on the National Register of Historic Places in 1980.

The Julius Frieseke House is a single family home located at 529 Corunna Avenue in Owosso, Michigan. It was listed on the National Register of Historic Places in 1990.

The Daniel Gould House was a single-family home located at 509 East Main Street in Owosso, Michigan. It was listed on the National Register of Historic Places in 1980. The house is missing and presumably demolished.

The Mason Street Historic Residential District is a primarily residential historic district located along Mason Street between Dewey and Hickory Streets in Owosso, Michigan. It was listed on the National Register of Historic Places in 1980.

The Colin McCormick House is a historical house in Owosso, Michigan, designed by Edger Ingersoll, and is notable for its size. It has had only 4 owners in its more than 120-year history. The last member of the McCormick family died in the house at 107 years of age. Edger Ingersoll incorporated features like the slate roof, crocheted roof ridging, hipped roof, scalloped trim, and more. It lies at 220 E. Exchange. The house was added to the National Register of Historic Places in 1980.

The Shiawassee Street School, also known as the Corunna Union School or the Corunna High School, is a former school building located at 106 South Shiawassee Street in Corunna, Michigan. It was listed on the National Register of Historic Places in 2017. It has been redeveloped into an apartment building known as Cavalier Greene.

The Steam Railroading Institute is located at 405 South Washington Street, Owosso, Michigan. It was founded in 1969 as the Michigan State University (MSU) Railroad Club. It became the Michigan State Trust for Railway Preservation, and later adopted its present name.The Steam Railroading Institute is an organization dedicated to the preservation, restoration, and operation of historical railroad equipment and items. It operates a heritage railroad which offers occasional passenger excursion trains using steam locomotives: Pere Marquette 1225 and Chicago and North Western 175.

The Owosso Downtown Historic District is a substantially commercial historic district, located in downtown Owosso, Michigan, roughly bounded by the Shiawassee River, Comstock Street, Water Street, Park Street, and Mason Street. The district was listed on the National Register of Historic Places in 2014.

Corunna ( CORE-UN-NUH) is a city and county seat of Shiawassee County in the U.S. state of Michigan. The population was 3,497 at the 2010 census. The city is surrounded by Caledonia Charter Township and is slightly east of the city of Owosso.

The Duff Building is a commercial structure located at 118 West Exchange Street in Owosso, Michigan. It was listed on the National Register of Historic Places in 1985.

The Grow Block is a commercial building located at 120-122 West Exchange Street in Owosso, Michigan. It was listed on the National Register of Historic Places in 1985.