Karandila is a mountain resort in Sinite Kamani Natural Park. It is situated among cool forests and sunny meadows at a height of 1,050m. Karandila is situated at 32km northeast of town of Sliven.
Kushbunar is a century old beech forest (over 400 years old) not far from town of Sliven, Sliven region. It was declared natural landmark in 1969 on an area of 40 hectares.
Karvavata Lokva (Bloody Puddle) was declared natural landmark in 1980 on an area of 2 hectares. Karvavata Lokva is situated in the region of town of Kotel, Sliven region. It is 134m deep.
Lednitzata or Lednika is a cave situated in Medven village, Kotel municipality, Sliven region. It was included in the list of natural landmarks in 1968 on an area of 18.30 hectares. Lednitzata is 1,111m long and 242m deep.
Maarata in Medven village, Kotel municipality, Sliven region is a natural landmark aiming to preserve the cave. It was declared protected territory in 1968 on an area of 17.80 hectares.
Malkata Maara (Small Maara) in town of Kotel, Sliven region was declared natural landmark in 1980 on an area of 3 hectares.
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Orlovite Peshteri (Eagles' Caves) was declared natural landmark in 1972 on an area of 5 hectares. They are situated on the land of town of Kotel, Sliven region. The state game breeding station in Kotel is taking care for preservation of the region.
Orlovata Skala (Eagle's Rock) was included in the list of natural landmarks aiming to preserve characteristic landscape and spreads on an area of 69 hectares.
Rakovski Cave was included in the list of natural landmarks in 2003 on an area of 2 hectares. The aim was to preserve the cave with characteristic landscape. It is included on the land of Kipilovo village, Kotel municipality, Sliven region. The cave bears the name of the great Bulgarian revolutionary from the period of National Revival Georgi Sava Rakovski who started to write his poem "Forest Traveller" in 1854.
Debelata Koriya is a natural deposit of swamp snowdrop situated in Blatets village, Sliven municipality, Sliven region. Debelata Koriya was declared protected zone in 1996 on an area of 164 hectares.
Tundzha Island is a natural landmark aiming to preserve poplar trees situated in town of Sliven, Sliven region. The place was included in the list of protected territories in 1976 on an area of 2 hectares. The municipality is performing the control over the place.
Korenik is century old beech forest in the region of Zheravna village, Kotel municipality, Sliven region. Korenik was declared protected territory in 2003 on an area of 10 hectares.
Izvorite (The Springs) is a karst spring in town of Kotel, Sliven region. They were included in the list of protected territories in 1971 on an area of 5 hectares.
Zlosten was included in the list of protected territories aiming to preserve characteristic natural territories aiming to preserve characteristic land formations, caves, karst formations and century old beech forest. Zlosten was declared natural landmark in 1985 on an area of 358 hectares.
Elenska Glava (Deer's Head) is a natural deposit of yew (Taxus baccata) situated in Borov Dol village, Tvarditsa municipality, Sliven region. Elenska Glava was declared natural landmark in 1987 on an area of 4 hectares.
Bilernika in town of Kotel, Sliven region is a natural landmark on an area of 1 hectare. The state game breeding station in Kotel is taking care for preservation of the region.
Badzhayu Kaya is a rocky formation in the region of Yablanovo village, Kotel municipality, Sliven region. The rocky formation was declared natural landmark in 1979 on an area of 1 hectare.
Dolnata Maaza is a cave on the land of Byala, Sliven municipality, Sliven region. It was declared natural landmark in 1971 on an area of 5 hectares.
Zmeevi Dupki is a cave in town of Sliven, Sliven region. The cave was declared natural landmark in 1969 on an area of 1 hectare.
Dryanovskata Cave in town of Kotel, Sliven region was included in the list of protected territories in 1971. It was declared natural landmark on an area of 5 hectares. There are beautiful formations in the cave.
The cave in Tsarevets place, village of Medven, Kotel municipality, Sliven region was declared natural landmark in 1968 on an area of 6 hectares. The state game breeding station in Kotel is taking care for preservation of the region.
Aglikina meadow is century old oak forest in the town of Sliven, Sliven region on an area of 120 hectares. It was declared protected territory in 2002.
Demir Kapiya (Steel Gates) was declared protected territory in 2003 on an area of 10 hectares. The aim was to preserve the characteristic landscape and endangered, rare and vulnerable animals and plant species habitats. The place is situated in town of Kotel, Sliven region.
Vida is a protected territory with characteristic landscape and rare and vulnerable animals and plant species habitats. It was included in the list of protected zones in 2003 on an area of 2 hectares. Vida is situated on the land of town of Kotel, Sliven region.
Zhelezni Vrata is a century old beech forest declared protected territory in 2002 on an area of 39 hectares situated in town of Sliven, Sliven region.
Chernite Izvori (Black Springs) is a karst spring in a cave situated in Medven village, Kotel municipality, Sliven region. They were declared natural landmark in 1968 on a territory of 20 hectares.
Halkata is a rock formation declared natural landmark in 1969 on an area of 1 hectare. Halkata is situated on the land of town of Sliven, Sliven region. The 8 m tall ring-shaped rock is formed as a result of devastating influence of atmospheric conditions. Halkata is one of the symbols of the Sliven ridge of Stara planina and of town of Sliven.
Urushkite Skali is rocky formation situated in town of Kotel, Sliven region. It is included in the list of natural landmarks in 1971 on an area of 10 hectares.
Haydut Dere is century old beech forest in the region of town of Sliven. It was declared protected territory in 2002 on an area of 30 hectares.
The Three Caves: Haydushka, Bachvata and Pyasachnik were declared natural landmarks in 1969 on a territory of 30 hectares. They are situated in town of Sliven, Sliven region.
Sini Vir (Blue Pool) Waterfall was included in the list of natural landmarks in 1968 on an area of 1.10 hectares situated in Medven village, Kotel municipality, Sliven region.
Prikazna Cave was declared natural landmark in 1972 on an area of 5.20 hectares. Prokazna cave is situated in the area of town of Kotel, Sliven region.
Rimsko Kale is a cave in the place of town of Kotel, Sliven region. The cave was included in the list of natural landmarks in 1962 on an area of 50 hectares.
Sveti 40 Machenitsi (St. 40 Martyrs) Cave is situated in Kipilovo village, Kotel municipality, Sliven region. St. 40 Machenitzi cave was declared natural landmark in 1971 on an area of 5 hectares.
Harsov grad, in Kipilovo village, Kotel municipality, Sliven region was declared protected area in 2003 aiming to preserve characteristic landscape on an area of 3 hectares.
