🏛️📜Gregory County Historical Museum OPEN - Dallas, SD

The Gregory County Historical Museum in Dallas, SD will be open on Sunday, September 27, 2026  from 1:00 p.m. to 3:00 p.m.

Also open from 1:00 to 3:00 p.m. will be the Ponca Valley Country School located in Gregory, SD south of the IOOF Lodge building.