Housed in a building dating from 1888, highlights at this museum include a highly embossed Vače situla, a Celtic pail from the late 6th century BC unearthed in a town east of Ljubljana, and a Stone Age bone flute discovered near Cerkno in western Slovenia in 1995. There are also examples of Roman glass and jewellery found in 6th-century Slavic graves as well as a huge glass-enclosed Roman lapidarium outside to the north.
Check out the ceiling fresco in the foyer of the main building, which features an allegorical Carniola surrounded by important Slovenes from the past and the statues of the Muses and Fates relaxing on the stairway banisters.