We were driving from the Partizan Club Pool in the neighborhood of Banjica when we saw this funky building below.
After doing a bit of research, I learned that it is the Miliary Medical Academy (Војномедицинска академија – Vojnomedicinska Akademija in Serb.) This is the largest hospital in Serbia and was constructed in 1982. It is like a VA hospital in the USA, but it also serves civilians also. We drove around the parking lot a bit and there were lots of cars and people. It was designed by the award-winning architects, Colonel Josip Osojnik and Slobodon Nikolic.