The city lies at the eastern end of the famous Rose Valley. It is flanked with mid-height mountain ranges on opposite sides, and is especially marvellous in May when rose fields blossom and the fragrance is unparalleled. The beautiful celebrations for the blossom of the roses there takes place in the first week of June. The whole week is filled with different attractions every day. That week is also interesting, because there is a beauty pageant and on the last day of the celebrations, the most beautiful girl in the city is chosen. They call her "The Queen Of Roses". According to The Ultimate Visual Encyclopedia, Bulgaria is the major supplier of a certain type of rose oil in the world and Kazanlak's rose gardens are the largest rose gardens in the whole world. It is the only place in the entire world that can grow this certain rose.