София is the capital and largest city of Bulgaria. It is located in the western part of the country, at the foot of Vitosha Mountain. With a history that spans over 2,500 years, it has been an important cultural and economic center. The city features a mix of architectural styles, including Roman, Byzantine, and Ottoman influences. The population of София is approximately 1.2 million people, making it one of the most populous cities in the Balkans. It serves as a hub for education, business, and transportation. Key landmarks include the Alexander Nevsky Cathedral and the National Palace of Culture.