Sofia is the capital of Bulgaria, and it is one of the most vibrant and active cities in the Balkan Peninsula, with a population of about 135 thousand people. This city is characterized as being multicultural, as young people migrate to it from all over the world due to the job opportunities and recreational attractions it provides. This city was previously the old European capital, and therefore it has great historical importance, as many civilizations have passed through and settled in it throughout history, leaving behind many historical monuments and evidence, some of which still exist to this day, and among those monuments there is the Boyana Church, and the Church of St. Sofia, St. George's Church, Banya Bashi Mosque, and many more. The city is characterized by its mild climate, which allows visitors to visit it most of the year. It is also characterized by its picturesque nature, where you will see waterfalls, rivers, forests and green spaces.