The cave Saeva Dupka is in Northern Bulgaria near the village of Brestnitsa, Lovech Province. It has five halls and 400 metres of tunels offer some of the most beautiful cave formations in the country. Besides that the cave has hosted many  music performances, thanks to the excellent acoustic conditions. Recent excavations have showed the cave was used  since Roman times. Currently Saeva dupka is one of the 100 Tourist Objects of Bulgaria.