Tunnel Mill
Many listed buildings are private homes. Please enjoy them from the street.
About Tunnel Mill
Tunnel Mill, at Off Co. Hwy. 1, was added to the National Register of Historic Places on May 12, 1975. The Register lists it for its industry and engineering, at the state level. The listing covers 20 acres.
PDFRead the original nominationThe form that put it on the Register, with its history, photos and a map · 26 MB · National Archives↗Finding Tunnel Mill
Off Co. Hwy. 1, Sumner Township
No other Register listing is within a short walk.
Memories of Tunnel Mill
The record says what it is. Neighbors know what it means.
Your answer becomes a post in Town Square.
Questions about Tunnel Mill
Is Tunnel Mill on the National Register of Historic Places?
Yes. It was added on May 12, 1975 (Register number 75000978).
Is Tunnel Mill a National Historic Landmark?
No. It is on the National Register; Minnesota has 25 National Historic Landmarks. The nearest is Mayo Clinic Buildings, 18.1 miles away.
Can you visit Tunnel Mill?
Our record doesn’t say whether it is open to visitors. Many listed buildings are private, so it may only be seen from the street.
Where can I read the history of Tunnel Mill?
In its National Register nomination, the form that put it on the Register: a 26 MB PDF at the National Archives, linked on this page.
Sources: National Park Service, National Register of Historic Places (05/22/2026) · National Archives catalog record 93201707. Map tiles © OpenStreetMap contributors.