The interior of the castle was made in the spirit of the ornate variant of the Hungarian sezession and was created a little later. The most valuable part of the interior of this building is the central hall. At the same time when the castle was built, a large park was erected around it, also known as “Spitzer Garden”. Spitzer Castle is a two-storey building with an asymmetrical base. The facade is especially emphasized, and the main entrance with a portico and semi-circular steps is placed there. The special value of the building is given by the interior of the central hall. It is dominated by a fireplace made of green Zsolnay firebricks, made according to special designs. The walls of the hall are with stylized plant ornaments and painted with sezession decorative program. The walls are panelled with wood panelling as is the upstairs gallery with balusters made of solid wood. Although the building is designed in the spirit of extreme eclecticism, it features triforiums and oculuses, a terrace and windows, Renaissance arcades, a terrace fence and baroque dome lines. The interior iz dominated by bright pink and light blue colours, which make a real “fireworks” and bring the interior closer to the polychromatic of old Russian churches and Hindu temples, which gives a particularly beautiful impression and review of the architect.

The ornamental decoration of the facades is made of plaster, but the painting and bright colours make this building unique. Also noticeable are the dragon heads, birds in flight and lions, as well as elements of wrought iron and stained glasses of special beauty and fine workmanship. Stained glass with floral motifs has not been preserved in its entirety, but it can be reconstructed. In its original design, the castle also had Bavarian baroque bulbs, as well as very ornate chimneys. Of special value is that the early phase of the Hungarian sezession is present here, which will later develop its full splendour and become recognizable and luxurious, but this example shows how Steindl developed the expression of the Hungarian sezession from eclecticism. In the yard, towards the road (street), overgrown with bushes, there is a gazebo.

The Spitzer family left Beočin before the beginning of the Second World War, and during it the castle was used as a building of the German military command, and after itsending, the building was nationalized. After that, it housed the city library, the House of Culture, the headquarters of the handball club, the radio station, the home for the disabled in war and finally an exclusive restaurant with accommodation. After the privatization of the company Podunavlje, within which it functioned, the building was abandoned and since then its sudden deterioration has begun. Our famous poet Miroslav Mika Antić used part of the castle as his painting studio. His frequent guest was Pero Zubac. The walkway for the transfer of stone in the cement factory, which is located in the immediate vicinity of the castle, contributed to the decline.