Bulgaria is a country located in Southeastern Europe, bordered by Romania, Serbia, Macedonia, Greece, and Turkey. It has a diverse landscape that includes mountains, beaches, lakes, and plains across its 111,000 square kilometers. Bulgaria has a long history dating back to ancient Thracian and Roman civilizations, and is known for natural beauty along its Black Sea coast, historical sites like the Madara Rider carving and Nesebar old town, and for traditions like folk dancing and being the birthplace of the Cyrillic alphabet.