The area has an extremely rich history. The city is one of the oldest capitals in Europe - with over 7,000 years of existence. It arises around a mineral spring, which is located at the crossroads of extremely important roads connecting Western Europe with Asia Minor and the Middle East, as well as the Baltic with the Aegean Sea.

The first name of the town is Serdika. It was ruled by Caesars, Vasilevs, Khans, Sultans and kings. In 29 the city came under Roman rule. Serdica crossed into the territory of Bulgaria in 809, during the reign of Khan Krum, who assessed the strategic position and conquered it.

Serdica's final accession was during the reign of Khan Omurtag. Then the name changes to Sredets.

In 1879 Marin Drinov proposed Sofia to become the capital of the Principality of Bulgaria. This makes the city an important political, economic, scientific and cultural center of the country.
During World War II, heavy bombing raids were carried out on Sofia by British and American aircraft. More than 12,500 buildings were destroyed, including the City Library, the Church of St. Spas, the National Theater, the Cathedral of St. Joseph ”and thousands of homes.

In 1945 a new urban plan of the capital was adopted. The following year, Bulgaria was declared a people's republic, and during the socialist regime the appearance of the capital changed significantly. The city is expanding to include neighboring villages. Industry, industrialization and housing are becoming the main focus. After the fall of the regime of Todor Zhivkov, a new rise in the construction and modernization of buildings began