The seat of the Goriška regional museum is situated at the Kromberk Castle near Nova Gorica. The castle itself is a Renaissance architecture both in appearance and design, and it was built at the beginning of the 17th century, partly on the foundations of an older castle from the 13th century. During the First and Second World War the castle was destroyed by fire. It houses an art history collection, an archeological collection a cultural history collection and a permanent exhibition of art mainly from the Goriška region.
The museum also manages several dislocated collections: the Dobrovo Castle hosts a permanent exhibition of the works of the painter Zoran Muršič and several temporary exhibitions; Medana holds the Memorial House of the poet Alojz Gradink; Ajdovščina offers exhibitions of fossils and the ancient Ajdovščina; the military watchtower in Vrtojba houses the smallest museum in the world. At the railway station of Nova Gorica it's a small exhibition of the border in the period 1947-2004.
Near the administrative building in Solkan, at Vila Bartolomei, it's possible to check a restoration exhibition, an archaeological-ethnological exhibition of pottery and the archeological exhibition about the Langobards graves found in Solkan.