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 dining room
The castle dining room was once an entertaining space for the castle owners and their guests. The ceiling is decorated with 18th-century stucco with the arms of alliance of the Counts of Leslie and the House of Liechtenstein.
The oldest furniture in the castle includes a late Gothic corner washstand from the second half of the 16th century and almost contemporary chairs and a table in the centre of the room.
The richly ornamented chests date from between the 16th and the 19th centuries.
A large Baroque credenza from around 1700 is the biggest piece of furniture in the collection.
There are 19 oil paintings on the sides of the Biedermeier cabinet next to the stove. The oldest are portraits of two hairy children, a boy and a girl, painted around 1600, while copies after Dutch masters from the 19th century are the most recent. On the golden background, Bacchus and Ariadne are depicted above Hephaestus and Artemis.
The walls are adorned with four precious tapestries from the early 17th century depicting scenes from the Odyssey: Odysseus Feigns Madness, Odysseus Offers Drink to Polyphemus, Odysseus and His Companions Flee from Polyphemus, and Odysseus Bids the Phaeacians Farewell. The exquisite works woven in Brussels from wool and silk threads are the legacy of the Counts of Leslie. The ten Brussels tapestries preserved in Ptuj Castle are the largest and finest collection in Slovenia.