Nicollet County Historical Society – Treaty Site History Center

Color photo of the Treaty Site History Center museum.
Address
1851 N. Minnesota Avenue
Saint Peter, MN 56082 United States Get Directions
Phone 507-934-2160

The Treaty Site History Center is located in Saint Peter, MN, one mile north of downtown just off of US Highway 169 North.

Address
1851 N. Minnesota Avenue
Saint Peter, MN 56082

Accessible parking
A free parking lot is available at the site.
Two disability parking spots are located near the museum’s entrance.
The parking lot and sidewalk are paved.

General
Service animals are welcome
First aid kits are available.
Restrooms on-site are accessible.

For visitors with mobility disabilities
The History Center is a single floor
Public restrooms in the History Center include accessible facilities and diaper changing stations.

The Nicollet County Historical Society was organized on August 22, 1928. From its home in the Treaty Site History Center, the Nicollet County Historical Society preserves, protects, and interprets the history of Nicollet County and the state of Minnesota.

The Treaty Site History Center features a nationally recognized and award-winning exhibit on the Traverse des Sioux Treaty of 1851 and its consequences. Other features of interest include local history exhibits, a gift shop, and a full-service research archive.

Events at this venue

Today

  • Close-up of pine tree branches with snow and water droplets. The blurry gray background sets a cool tone. Text in the foreground reads: "Closed for Winter Break.

    Closed for Winter Break

    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States +1 more

    Our offices and sites are closed for winter break from December 21, 2025, through January 5, 2026. Regular hours resume on January 6, 2026.

  • Five people sit around a table in a room with beige walls, looking at papers and books. Framed photos and documents are displayed on the back wall. The text "hiSTORY hangout" appears at the bottom.

    hiSTORY hangout

    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    Ask questions, listen to the discussion, and enjoy learning about local history from your friends and neighbors. Show-and-tell is encouraged, so bring any photos, artifacts, or stories you'd like to share.

  • A promotional image for "Remember the Magic: A Look Back at the Dayton’s Holiday Shows" from Twin Cities PBS Originals, featuring costumed figures in a festive display and the PBS and TPT logos.

    Viewers Like Us Club

    Viewers Like Us Club
    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    Marvelous. Memorable. Magical. Relive the treasured tradition of Dayton’s holiday shows.

  • Image with small pumpkins lined up at the bottom against a yellow background. Text reads: “Closed for Fall Break November 27–29.”.

    CLOSED FOR FALL BREAK

    Featured
    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States +1 more

    Nicollet County Historical Society sites and offices are closed for fall break, November 27-29, 2025.

  • A plate of food with greens and eggs on the left, a spice tray on the right, and text in the center that reads “Relish: A Food & Culture Series by Twin Cities PBS. Get Inspired” on a colorful background.

    Viewers Like Us Club

    Viewers Like Us Club
    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    Relish shares stories and recipes of cultural heritage in Twin Cities communities through the universal language of food.

  • Postponed Board of Directors meeting

    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    The public is invited to attend the Board of Directors meeting.

  • A small wooden cabin with a shingled roof and a ramp stands on a grassy area, surrounded by trees. A wooden fence and a tree are visible in the foreground on a sunny day.

    Log Cabin Workshop

    Featured
    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    Mark Johnson of Artisan Restoration in Kasota will teach us how cabins were built and maintained in the past during this hands-on workshop.

  • Sepia-toned image with a vintage photograph of a woman against a backdrop of an American flag. Text reads: "STRIPPED OF CITIZENSHIP: American-born Women, Marriage, and Expatriation in Minnesota" with Lori Ann Lahlum. A red "VOID" stamp is on the bottom left.

    Stripped of Citizenship: American-born Women, Marriage, and Expatriation in Minnesota

    Featured
    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    In this presentation, "Stripped of Citizenship: American-born Women, Marriage, and Expatriation in Minnesota," Lori Ann Lahlum explores the expatriation of American-born women in Minnesota who married aliens and the ways in which we can reclaim their stories.

  • A figure with a parachute harness holds a briefcase, standing against a cloudy sky backdrop with a small plane. Yellow text reads "I am DB Cooper." Dollar bills are scattered in the air, and trees are visible in the foreground.

    Film Series | I Am DB Cooper

    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    In 1971, DB Cooper boarded a plane, stole $190,000, and jumped out. "I Am DB Cooper" is a hybrid-documentary of a modern day treasure hunt to uncover truths about the only unsolved hijacking in US history.

  • Illustration of the Treaty Site History Center with blue sky and trees in the background. Text reads: "Free Day Friday, April 18 | 10 AM - 4 PM, Nicollet County Historical Society.

    Free Day Friday

    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    Mark your calendar for a free day at the History Center! Enjoy a cost-free experience on Friday, April 18, 2025.

  • Text reading "Nicollet County Historical Society Annual Business Meeting, Monday, April 7, 5:00-7:00 p.m." is overlaid on a faded map background.

    Annual Meeting

    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    Mark your calendar for the annual business meeting on April 7. Everyone is welcome to attend this free event.

  • Sketch of a baseball player pitching is overlaid on a blurred background with large text reading "KITTY TO COOPERSTOWN." The player wears a cap and uniform, and a baseball is depicted near the text. A blue signature is visible in the bottom right corner.

    Film Series | Kitty to Cooperstown

    Nicollet County Historical Society - Treaty Site History Center 1851 N. Minnesota Avenue, Saint Peter, MN, United States

    "Kitty to Cooperstown" chronicles the extraordinary journey of Jim Kaat, one of baseball's most enduring legends. This documentary traces Kaat's eight-decade-long career, from on the mound to in the booth. Through exclusive interviews with Hall of Fame players and reporters, "Kitty to Cooperstown" delves deep into Kaat's life, showcasing his dedication, resilience, and passion for the game.