Pautalia is an ancient city located in present-day Kjustendil, Bulgaria. It was known for its thermal springs and was a significant settlement during the Roman Empire. The city was strategically positioned along important trade routes, contributing to its economic prosperity. Today, the archaeological site of Pautalia features well-preserved ruins, including baths, temples, and residential buildings. Visitors can explore the remnants of its rich history, which reflect the cultural influences of various civilizations, including the Thracians and Romans. The site is a testament to the area's historical significance and attracts tourists interested in ancient history.