This small city on the slope of a mountain is located in a breathtaking fjord which is the biggest in Southern Europe. The wall surrounding the old city goes high up the mountains and is lit at night. The location of the city, combined with the narrow marble streets and small houses, squares and beautiful churches make this place definitely worth the title of World Heritage Site. A visit to Kotor isn't complete without climbing high up the city walls, giving you a view overlooking the surrounding area (make sure to wear good footwear).