The Roman city of Conímbriga is one of the best-preserved archaeological sites in Portugal. Founded in the 1st century BC, it was an important settlement during the Roman Empire, showcasing advanced urban planning and architecture. The site features impressive ruins, including a forum, baths, and intricate mosaics that reflect the city's wealth and cultural significance. Excavations at Conímbriga have revealed a wealth of artifacts, providing insight into daily life in Roman times. The city was abandoned in the 5th century AD, likely due to invasions and economic decline. Today, it serves as a valuable historical site, attracting visitors interested in Roman history and archaeology.