Our History

The MonDak Heritage Center is Eastern Montana’s premier museum and the arts & cultural hub of Richland County, Montana. Operated by the MonDak Historical & Art Society, we are a 501(c)(3) non-profit organization with a mission is to engage, educate, and inspire our community by preserving and contributing to the area’s arts, culture, and heritage.

Local residents formed the Society in 1967 and opened a temporary museum known as the J.K. Ralston Museum and Art Center in 1972 in the “old hospital” in Sidney, Montana. Named after Ralston, the famed western artist and Richland County native, the Ralston Center operated for twelve years until the museum moved to the MonDak Heritage Center in 1984.

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Our Services

The MonDak Heritage Center offers:

An extensive research library and archives
Research assistance upon request
ADA accessibility
Art programs for youths and adults
Museum tours
Access to historical records and photographs
Space for public meetings and private events
Cultural, music, and humanities programs
An incredible “Main Street” Town history exhibit
National and regional traveling art and history exhibitions
A unique gift shop with merchandise from local artists and authors
A can’t-miss experience in Eastern Montana

Our Facility


Built: 1984, frontier blockhouse style.

Construction cost: $450,000 or $27.50 per square foot.

Size: 8,100 square feet per floor or about 16,200 total square feet.