Plovdiv, the second largest town in the country, built on the plain of Thrace, was previously a main crossroads between Europe and the East. The historical centre of the city, magnificently conserved and protected, allows you to admire what was the town centre in the 18th century, particularly when visiting the church of Saints Constantin and Helen, with superb frescoes and richly decorated iconostasis. Plovdiv also has superb wooden houses with coloured facades, old residences belonging to rich aristocrats and merchants of the 18th and 19th centuries, which also bear witness to the national Bulgarian renewal style. Some have been transformed into museums, such as the Balabanov, Chomatov, Danov and Hindlian residences. Plovdiv is a very lively town from Spring to Autumn, with very enjoyable nightlife. Typical of the region, the "masť", or restaurant located in the basement of a cool and vaulted cellar, allows you to escape from the summer heat. The poet Lamartine stayed here during his trip to the Orient (you can visit the house where he stayed). Numerous archaeological relics bear witness to the Latin presence, the most impressive being the Roman amphitheatre with more than 3,000 seats that is still used as an open-air theatre. Neither will you miss a visit to the Archaeological and Ethnographical museums. To also see in the surrounding areas: the pretty village of Bratzigovo and Lake Batak.