It really is a misnomer to say that this day was in Donji Milanovac, because our two excursions were not in the town. Our first stop early in the morning was at the Gulubac Fortress. That fortress is which is about 1 hour drive from the city of Donji Milanovac. This area is the beginning of the Iron Gates section of the Danube which is now essentially a lake due to the building of a hydroelectric dam completed in the 1972. Prior to the building of the dam and its locks, this area was one of the most difficult for river ships to navigate.

With the building of the dam, it allowed river ships to easily move from upprer Danube to the lower Danube, but also flooded many villages and raised water levels along the river.

The ships can dock right at Gulubac fortress and our local tour guide met us riverside to start the tour of this fortress. This fortress is that it was never conquered by force, it only changed hands through treaty and payments.