THE COLLECTION OF ARMS at Ptuj Castle is of national importance, as it comprises more than 500 pieces of various cold weapons, firearms, hunting and sporting weapons, and protective equipment dating from the 15th to the 20th centuries. Most of the exhibited items come from the nearby Vurberk Castle, while some pieces were collected by members of the Ptuj Museum Society.

THE COLLECTION OF MUSICAL INSTRUMENTS
The Collection of Musical Instruments in Ptuj Castle is of national importance. With over 300 musical instruments for playing art and folk music, it is the most extensive collection of its kind in Slovenia. The collection also includes sheet music and instrument making tools. A Roman double flute from the 2nd or 3rd century is especially noteworthy, as it is a rarity of global importance.
This exhibition presents the Ptuj Civic Guard Band, the younger Ptuj Brass Band, wind instruments, plucked and bowed string instruments, and keyboard instruments. The instruments were made by renowned instrument makers from Vienna, Graz, and Prague, as well as by local masters.