Katinski Piramidi
Another pyramid-like 20 m high bedrock formations in rusty-brownish colour and reddish taints, to be found around the village of Katina, district Sofia. Point of approach to the site is the railway station of Kourillo, 5 km SW of Katina. Declared under legal protection as a natural landmark.
Kostenets
The town with a population of 9954 is a part of the district of Sofia territory, 74 km southeast of Sofia, beside the Sofia-Plovdiv motorway with railway and bus stations of the same destination. Momin Prohod, municipality of Kostenets is yet another balneologic resort of Bulgaria.
Kostenets
A village with same name as that of the municipality centre, 7 km southwest of the town of Kostenets, hidden in the northern foots of the Rila Mountains with 4296 native residents. The hydropathical resort, 2 km SW, with mineral water 46-73°C hot very effective in treatment of diseases of the locomotory system, gynaecological, nerve and other diseases. The balneological facilities are fitted out with a complex of rest houses, villas, a beautiful park with an artificial lake in it, waterfall 7 m high.
Koulata
Koulata is a medium-size village (898 local residents), municipality of Petrich, district Blagoevgrad. Located 15 km southeast of Petrich near the Greek-Bulgarian border beside the main motorway Sofia – Solun (Thessalonica) past the river of Strouma; also a middle railway station of the same line of connection. The settlement is known for busy border checkpoint and customs. Travellers can ask for accommodation, eating and drinking at the local motel and camping site.
Kovachevitsa
This is a small village, district of Blagoevgrad, municipality of Garmen, within 17 km southeast of its municipality centre, 23 km away from Gotse Delchev (a convenient motor road connection available), set in the western flanks of the Dabrash branch of the Rhodopes. The settlement features the presence and availability there of 110 old-time houses of the National Revival period and that is the reason why the place has been identified as an Architectural-and-Historical Reserve of the country.