The Valley of the Thracian Kings is an archaeological site located in Bulgaria, known for its rich history and burial mounds. This area served as a royal necropolis for the Thracian elite during the 4th to 3rd centuries BCE. The site features impressive tombs, many adorned with intricate frescoes and artifacts that reflect the culture and beliefs of the Thracians. Among the notable tombs is the Kazanlak Tomb, a UNESCO World Heritage site, famous for its well-preserved murals. The valley provides valuable insights into the funerary practices and social structure of the Thracian civilization, making it an important location for historians and archaeologists.