Kilkis in Northern Greece has hidden treasures! In the surrounding area, there are wonderful natural points of interest, such as the waterfalls of Skra, the homonymous blue lake, and the Cave of Agios Georgios. Your activities there should definitely include a walk on Lake Doirani or an exploration of the Botanical Garden of Krusia. Don't leave without sampling the northern Greek flavors the area has to offer and without taking a stroll around the town!