The Thracian Tombs of Kazanlak are ancient burial sites located in Bulgaria, dating back to the 4th century BCE. These tombs are part of the Thracian culture, known for their rich burial practices and impressive art. The most famous tomb, discovered in 1944, features stunning frescoes that depict scenes of daily life and rituals. The tombs are recognized as a UNESCO World Heritage Site due to their historical significance and well-preserved architecture. They provide valuable insights into the Thracian civilization, including their beliefs and social structure. Visitors can explore the site and learn about the fascinating history of the Thracians.