Sliven is a successful tourist destination, preserving Bulgarian history, culture and nature, and offering its guests diverse possibilities for learning, sport and recreation. The generosity of the nature towards Sliven is undeniable. The Blue Stones rock massif, the clean air, the abundance of water, the moderate climate, the mineral springs, the fertile valley of Tundzha river and the Sliven field are just some of its gifts. The area of the nowadays town has been inhabited for millennia. The advertising slogan of Sliven is: "Sliven – experience the history, feel the nature."