Built in 1935 by architect Dragiša Brašovan. Nice example of socialist modernism architecture of the period between world wars. Compared to after WWII Yuguslavian modernist architecture that was inspired by Le Corbusier, this building looks like more Art Deco style. Especially these window elements:

On the other side of the building there are statue of Icarus, the work of the sculptor Zlata Markov:

Entrance group is looking like this today:

Building was heavily damaged in 1999 and now looks abandoned. More information in wikipedia.