Old Minnehaha County Courthouse, Former county courthouse in Sioux Falls, United States

The Old Minnehaha County Courthouse is a government building constructed from pink quartzite stone with Roman arches, rounded windows, and a striking clock tower in downtown Sioux Falls. The three-story structure displays Romanesque architecture with thick walls and detailed stonework.

The structure was designed in 1890 by architect Wallace L. Dow in the Richardsonian Romanesque style with imposing stone walls. It served as the county government center until 1962, when officials relocated to a newer building.

The building now houses the Old Courthouse Museum, run by the Siouxland Heritage Museums Alliance. Its three floors of exhibits cover railroads, Native American artistry and culture, prairie travel, county towns, the American flag and chairs.

The building stands at Main Avenue and 6th Street in downtown Sioux Falls, with the entrance under the clock tower. Exhibits fill all three floors, so allow time to move between levels. The sources do not state opening hours or admission details; check with the Siouxland Heritage Museums Alliance before visiting.

The museum's third floor holds a collection of chairs, an unusual exhibit alongside displays on the American flag and county towns. The building itself is one of Sioux Falls' oldest, and its quartzite walls were quarried locally.