Sofia, Sofia City, Bulgaria

🇧🇬 Sofia is the capital and largest city of Bulgaria. It is situated in the eponymous valley at the foot of the Vitosha mountain in the western parts of the country. The city is built west of the Iskar river, and has many mineral springs, such as the Sofia Central Mineral Baths. It has a humid continental climate. Being in the centre of the Balkans, it is midway between the Black Sea and the Adriatic Sea, and closest to the Aegean Sea.

Known as Serdica in Antiquity and Sredets in the Middle Ages, Sofia has been an area of human habitation since at least 7000 BC. The recorded history of the city begins with the attestation of the conquest of Serdica by the Roman Republic in 29 BC from the Celtic tribe Serdi. During the decline of the Roman Empire, the city was raided by Huns, Visigoths, Avars and Slavs. In 809 Serdica was incorporated into the Bulgarian Empire by Khan Krum and became known as Sredets. In 1018, the Byzantines ended Bulgarian rule until 1194, when it was reincorporated by the reborn Bulgarian Empire. Sredets became a major administrative, economic, cultural and literary hub until its conquest by the Ottomans in 1382. From 1530 to 1826, Sofia was the regional capital of Rumelia Eyalet, the Ottoman Empire's key province in Europe. Bulgarian rule was restored in 1878. Sofia was selected as the capital of the Third Bulgarian State in the next year, ushering a period of intense demographic and economic growth.

Sofia is the 14th largest city in the European Union. It is surrounded by mountainsides, such as Vitosha by the southern side, Lyulin by the western side, and the Balkan Mountains by the north, which makes it the third highest European capital after Andorra la Vella and Madrid. Being Bulgaria's primate city, Sofia is home of many of the major local universities, cultural institutions and commercial companies. The city has been described as the "triangle of religious tolerance". This is due to the fact that three temples of three major world religions—Christianity, Islam and Judaism—are situated within one square: Sveta Nedelya Church, Banya Bashi Mosque and Sofia Synagogue. This triangle was recently expanded to a "square" and includes the Catholic Cathedral of St Joseph.

Sofia has been named one of the top ten best places for start-up businesses in the world, especially in information technologies. It was Europe's most affordable capital to visit in 2013. In 1979, the Boyana Church in Sofia was included onto the World Heritage List, and it was deconstructed in the Second Bulgarian Empire, holding much patrimonial symbolism to the Bulgarian Orthodox Church. With its cultural significance in Southeast Europe, Sofia is home to the National Opera and Ballet of Bulgaria, the National Palace of Culture, the Vasil Levski National Stadium, the Ivan Vazov National Theatre, the National Archaeological Museum, and the Serdica Amphitheatre. The Museum of Socialist Art includes many sculptures and posters that educate visitors about the lifestyle in communist Bulgaria.

The urban area of Sofia comprises Sofia City Province and parts of Sofia Province (Dragoman, Slivnitsa, Kostinbrod, Bozhurishte, Svoge, Elin Pelin, Gorna Malina, Ihtiman, Kostenets) and Pernik Province (Pernik, Radomir), representing 5.16% of the country territory. The metropolitan area of Sofia is based upon one hour of car travel time, stretches internationally and includes Dimitrovgrad in Serbia.

Economy Sofia is the economic hub of Bulgaria and home to most major Bulgarian and international companies operating in the country, as well as the Bulgarian National Bank and the Bulgarian Stock Exchange. The city is ranked 62nd among financial centres worldwide. In 2015, Sofia was ranked 30th out of 300 global cities in terms of combined growth in employment and real gross domestic product (GDP) per capita, the highest one amongst cities in Southeast Europe. The real GDP (PPP) per capita growth at the time was 2.5% and the employment went up by 3.4% to 962,400. In 2015, Forbes listed Sofia as one of the top 10 places in the world to launch a startup business, because of the low corporate tax (10%), the fast internet connection speeds available – one of the fastest in the world, and the presence of several investment funds, including Eleven Startup Accelerator, LAUNCHub and Neveq.

The city's GDP (PPS) per capita stood at €29,600 ($33,760) in 2015, one of the highest in Southeast Europe and well above other cities in the country. The total nominal GDP in 2018 was 38.5 billion leva ($22.4 billion), or 33,437 leva ($19,454) per capita, and average monthly wages in March 2020 were $1,071, the highest nationally. Services dominate the economy, accounting for 88.6% of the gross value added, followed by industry 11.3% and agriculture 0.1%.

Historically, after World War II and the era of industrialisation under socialism, the city and its surrounding areas expanded rapidly and became the most heavily industrialised region of the country, with numerous factories producing steel, pig iron, machinery, industrial equipment, electronics, trams, chemicals, textiles, food. The influx of workers from other parts of the country became so intense that a restriction policy was imposed, and residing in the capital was only possible after obtaining Sofianite citizenship. However, after the political changes in 1989, this kind of citizenship was removed.

The most dynamic sectors include Information technology (IT) and manufacturing. Sofia is a regional IT hub, ranking second among the Top 10 fastest growing tech centres in Europe in terms of annual growth of active members. The sector employs about 50,000 professionals, 30% of them involved in programming, and contributes for 14% of the city's exports. The IT sector is highly diverse and includes both multinational corporations, local companies and start-ups. Multinationals with major research, development, innovation and engineering centres in Sofia include the second largest global IT centre of Coca-Cola, Hewlett-Packard, VMware, Robert Bosch GmbH, Financial Times, Experian, etc. Several office and tech clusters have been established across the city, including Business Park Sofia, Sofia Tech Park, Capital Fort and others.

Manufacturing has registered a strong recovery since 2012, increasing the exports three-fold and the employment by 52% accounting for over 70,000 jobs. Supported by the city's R&D expertise, Sofia is shifting to high value-added manufacturing including electrical equipment, precision mechanics, pharmaceuticals. There are 16 industrial and logistics parks in Sofia, some sprawling to towns in neighbouring Sofia Province, such as Bozhurishte, Kostinbrod and Elin Pelin. Manufacturing companies include Woodward, Inc., producing airframe and industrial turbomachinery systems, Festo, producing microsensors, Visteon, development and engineering of instrument clusters, LCD displays and domain controllers, Melexis, producing micro-electronic semiconductor solutions in the automotive sector, Sopharma, producing pharmaceuticals, the largest Lufthansa Technik maintenance facilities outside Germany etc.