Since 1928, the Nicollet County Historical Society has chronicled the area’s history and worked to collect and preserve its memories and stories.

Interpret the county’s diverse past and hear stories of gathering spots for fur trading, treaties and other historical meetings. Envision traveling the prairie, backwoods, ghost towns and ghost cemeteries.

Nicollet Co. building


1851 North Minnesota Avenue
St. Peter



Tuesday to Saturday:

10:00 a.m. to 4:00 p.m.


A Gateway & a Gathering Place

A county museum and more, the Treaty Site History Center’s exhibits tell the story of the Dakota people, the first explorers, cartographers, traders, and Euro-American settlers who came to the Traverse des Sioux crossing on the Minnesota River. The interaction of these people laid the historical foundation for the signing of the 1851 Treaty of Traverse des Sioux between the Dakota people and the U.S. government. This ceded 24 million acres of prime land to the U.S. and opened the way to the settlement of the West.

There is no time like the present to delve into the continuation of centuries-old tales and immerse oneself in historic crossroads of the past.