Explore Sofia, one of the hidden gems in Europe. Located on the land of the ancient Thracian civilization, keeping traces of the Roman Empire and the palace of Constantine the Great, Sofia will enchant you. Old and new Sofia sights mix in an exciting blend. You'll walk on the Square of religious tolerance. As Bulgaria is located at a crossroads between Europe and Asia, many cultures have set foot on this territory, thus making Sofia a cosmopolitan city today. You'll enjoy beautiful architecture by Austrian architects, enormous communist buildings, and people with big hearts.