Portugal is home to several impressive Roman ruins that showcase its ancient history. Notable sites include the well-preserved Roman Theatre of Mérida, which dates back to 15 BC, and the Roman Temple of Évora, known for its iconic Corinthian columns. These ruins reflect the architectural and cultural influence of the Roman Empire in the Iberian Peninsula. Another significant site is the Roman city of Conímbriga, where visitors can explore extensive mosaics and remnants of houses, baths, and streets. These ruins provide valuable insights into daily life during Roman times and highlight Portugal's rich archaeological heritage.