1. Presentation

2. St. Alexander Nevsky
 St. Alexander Nevsky Cathedral is a Bulgarian Orthodox cathedral in Sofia, the capital of Bulgaria. Built in Neo-Byzantine style, it serves as the cathedral church of the Patriarch of Bulgaria and is one of the largest Eastern Orthodox cathedrals in the world, as well as one of Sofia’s symbols and primary tourist attractions.The St. Alexander Nevsky Cathedral in Sofia occupies an area of 3,170 square metres (34,100 sq ft) and can hold 10,000 people inside

3. Vitosha
Vitosha Mountain is the oldest nature park on the Balkan Peninsula. Its gorgeous silhouette is visible from almost all positions in the city and is inseparable part of Sofia’ image. On the park’s territory 61 types of habitats were identified; among them of greatest interest as far as nature conservation goes are the natural spruce forests, the peat areas, the moraines and the caves.

4. National Palace of Culture (NDK)
The centre was initiated at the suggestion of Lyudmila Zhivkova, daughter of the communist leader of the former People's Republic of Bulgaria Todor Zhivkov. The project was designed by a team of Bulgarian and foreign architects led by Alexander Georgiev Barov (1931–1999) along with Ivan Kanazirev. The landscaping of Bulgaria Square in front of the National Palace of Culture was designed by another team of architects and landscape engineers, led by Atanas Agura. Internally, the building exhibits a unified style, employing an octagonal motif and heavy, dark colours. Large bright murals depicting historical figures and events cover the main wall of many of the smaller halls.

5. Construction:
Built 1979–1981 Opened on 31st of March in 1981

6. The building's total functional area is 123,000 square meters over eight floors, four panoramic terraces, and three underground levels. There are 12 multi- functional halls seating from 50 to 4,000. Each hall has a thematic appearance.
There are also 54 offices and seminar rooms, 17,000 square meters of lobbies suitable as exhibition space, plus five restaurants and catering companies.
The venue's staff includes professional conference teams to assist in preparation and implementation of events. Facilities include: sound systems, lighting, simultaneous translation, video and recording equipment, stage sets and exhibition modules.

7. The ancient Scomius or Scombrus is a mountain massif, on the outskirts of Sofia, the capital of Bulgaria. Vitosha is one of the symbols of Sofia and the closest site for hiking, alpinism and skiing. Convenient bus lines and rope ways render the mountain easily accessible. Vitosha has the outlines of an enormous dome. The territory of the mountain includes Vitosha nature park that encompasses the best known and most frequently visited parts. The foothills of Vitosha shelter resort quarters of Sofia; Knyazheva quarter has mineral springs. Vitosha is the oldest nature park in the Balkans. The mountain emerged as a result of volcanic activity and has been subsequently shaped by the slow folding of the granite rock layers and a series of gradual uplifts of the area. It appears dome shaped at first sight, but the mountain, 19 km long by 17 km wide, actually consists of concentric denudational plateaus rising in tiers one above the other. Vitosha is separated into four main parts whose main ridges gather at a crown known as Cherni Vrah ("Black Peak"). This is the highest point of the mountain at m and is one of 10 peaks of Vitosha over m in height.
Vitosha Mountain

8. Location Sofia City Province, Pernik Province, west central Bulgaria
Location Sofia City Province, Pernik Province, west central Bulgaria. Due to a great variability in elevation, a rich diversity of climates, flora and fauna can be found within the park. Research has revealed that on the comparatively small area of the mountain there are 1,500 species of higher plants, 500 species of fungi, 500 species of algae, 326 species of mosses, and 200 species of lichens. Among them 31 species are Balkan endemics and 52 species are included in the Red Book of Bulgaria.

9. Church of St. George, Sofia
Built by the Romans in the 4th century, it is a cylindrical domed structure built on a square base. It is believed that it was built on the site of a pagan temple, though the original purpose of the building was for public use. The building is famous for the 12th-, 13th- and 14th-century frescoes inside the central dome.

10. History and architecture
The church is located in the courtyard between the Sheraton Hotel and the Presidency at a level a few metres below the modern streets of the capital. It is considered to be the oldest preserved building in the city, built at a time when Sofia was the residence of the emperors Galerius and Constantine the Great.
The church is part of a larger archaeological complex. Behind the apse, there are ancient ruins: a section of a Roman street with preserved drainage, foundations of a large basilica, probably a public building, and some smaller buildings. Experts define it as one of the most beautiful buildings in the so-called "Constantine district" of Serdika-Sredets, where the palace of Emperor Constantine the Great, and later of Sebastokrator Kaloyan were situated.
The Rotunda is a part of a large complex of ancient buildings from the late 3rd and early 4th century. It was built of red bricks and has a complex symmetry. At the centre, there is a domed rotunda room with a circular plan on a square base with semicircular niches in the corners. Since the 4th century, it has been used for christening (baptising) ceremonies. The dome rises to m from the floor. Through the centuries it had been used as a public, religious and even a representative building.

11. The Central Mineral Baths
The Central Mineral Baths is a landmark in the centre of Sofia, the capital of Bulgaria, a city known for the mineral springs in the area. It was built in the early 20th century near the former Turkish bath (then destroyed) and was used as the city's public baths until 1986.Public baths have existed in Sofia since at least the 16th century.

12. Mineral water springs
The city of Sofia was established next to some tracian mineral water springs. Today these mineral springs are located next to the Central bath (Tsentralna banya), Banya Bashi Mosque and TZUM Shopping mall. A new construction lets the water flow and people can drink or take some mineral water at home absolutly free of charge.
Sofia is uniqe by having 42 mineral springs with 8 different hydro-trermal zones with a temperature of 30 to 90 degrees Celsius. With the water flowing at 480 liters per second. Sofia mineral springs are deep under the ground, they are clean and can not be poluted.