golubac fortress golubacka trvdjava, or goluback grad taken during a sunny afternoon with windmills in background.

afternoon architecture castle danube destination djerdap ecology electricy energy europe famous fort fortified fortress gates golubac golubacka golubacki grad green historical iron landmark landmarks landscape main medieval national nature old one park river scenic serbia serbian serbiapicture sightseeing sky stone sunny taken tourism tower town travel tvrdava tvrdjava valley view wall was water well windmill