The first floor of Ptuj Castle houses a collection of feudal dwelling culture with furnishings dating from the 16th to the 20th century. The furniture and artworks, which mostly come from the estate of the Counts of Herberstein, create a historic ambience in the rooms. Some of the furnishings come from the nearby castles of Vurberk, Hrastovec and Ormož, and a few pieces from the mansions of Dornava and Turnišče.
The carefully furnished rooms are adorned with ceiling stucco and lavish chandeliers, and the tile stoves and numerous clocks of various shapes and sizes are particularly striking.

The old chapel
Until the end of the 17th century, this room housed a chapel, as evidenced by the richly decorated ceiling with the oldest surviving stucco in the castle. In the 1770s, the Counts of Leslie had the room painted with decorative Rococo paintings. The copper wine vessel dates from the 17th century, the telescope and the baby carriage from the 19th century.