In Mount Gambier and its surrounds, a variety of national and state museums showcase the region's rich history, culture, and natural environment. Notable museums include the Mount Gambier Courthouse Museum, highlighting the town's legal history.
The Main Corner Complex houses the Millicent National Trust Museum, featuring restored buggies, carriages, and a shipwreck room. The Mount Gambier RSL War Museum displays military memorabilia from various conflicts. The Nangwarry Forestry and Logging Museum explores the forestry industry's history in the region.
The Port MacDonnell & District Maritime Museum delves into South Australia's maritime heritage. Additionally, the Millicent Murals, created by local artists, are a popular artistic attraction in the area. These museums provide a unique insight into Mount Gambier's history, culture, and natural surroundings, offering a must-visit experience for travelers seeking to learn more about the region.