Old Town
I loved this city that was completely destroyed during the Balkan war, and then rebuilt. UNESCO has declared it a World Heritage Site. Walking around the Old Town is finding a different hideaway with every step. Too bad its become overridden with shops, but it's still worth the ride up there. I recommend eating at one of the many restaurants that are between the streets and that have awnings so that you can try to avoid the heat. They're not expensive and the quality of the food is excellent. If you haven't done it before, definitely walk around. There are stones, sights and to lose sight of one after another.