Montana's Original Governor's Mansion (OGM) is an historic house museum located at 304 North Ewing Street near downtown Helena. Entrepreneur William Chessman built the Mansion as a private residence in 1888. The three-story Queen Anne-style structure was acquired by the State of Montana in 1913 to serve as its first official governor's residence. The home then housed a succession of nine First Families until a new governor's residence was built in 1959. The Original Governor's Mansion Restoration Society began to refurbish the building in 1969 with the support of the City of Helena, and has continued to provide essential community support. Since 1981 the Montana Historical Society has administered the Mansion, and today, the building is carefully restored to its authentic appearance during the mansion's first years as home to Montana's governors.
Guided tours of this stately mansion offer a splendid opportunity for visitors to experience the material culture and social history during the time it was occupied by Governor Sam Stewart and his family, 1913-1921. Children's tours are highlighted with mischievous stories of the young Stewart girls, Emily, Marjorie, and Leah. Tour groups are limited to twenty people. Tour Fee: $4.00 per adult, $1.00 per child, $10.00 per family maximum. Museum/OGM Combo Passes: $8.00 per adult, $1.50 per child, $19.00 per family maximum.
Summer Hours:May 1 through September 30
Tuesday through Saturday - tours begin on the hour at noon, 1:00, 2:00 and 3:00
Closed Sundays, Mondays and Holidays.
Winter Hours:October 1 through April 30
Saturdays only - tours begin on the hour at noon, 1:00, 2:00 and 3:00
Closed Sundays through Fridays and Holidays.
How to Schedule a Group Tour of the Original Governor's MansionFee: School tours are free; Adult Group tours cost $50 per group (max. 20 people).
Please contact us at least two weeks in advance. For tours planned during legislative sessions or the month of May, it is advisable to make arrangements a month in advance as these time slots fill early.
To book a tour, please call (406) 444-4789 or email firstname.lastname@example.org. To facilitate the process please provide the following information:
- Preferred Tour Date
- Preferred Tour Times
- Size and grade level/age of your group
- Special needs or considerations
- Which tours you would like
Once we have scheduled your tour, we will mail you a reservation confirmation form, and if applicable, an invoice for your admission fee. Payment can either be made in advance or at the time of your visit.