The museum is located in the Coronini mansion from the 17th century. It contains the collections from the field of ethnology and archaeology, the collection of medieval ceramics and the exhibition of the finds from the archaeological site in Most na Soči. The museum also contains a wedding hall and occasionally houses galleries. Souvenirs are available in a small shop. Curators guide visitors around Tolmin and its surroundings. There are many sights of interest, e.g.: the church of the Holly Ghost on Javorica, the archaeological site in Most na Soči and the German ossuary.