Founded in 432 BC and the country’s second-largest city, the museum town of Plovdiv is divided by the Maritsa River and contains both an old quarter and a new commercial section. The old part contains many buildings dating from the 18th and 19th centuries (and earlier) in typical National Revival style. It is possible to wander along the narrow cobbled streets and see Roman ruins (including an amphitheater), picturesque medieval houses and 17th-century buildings with their upper sections hanging out into the street and almost touching those opposite. The Archaeological Museum has collections of gold Thracian artifacts, including cooking utensils, and the Ethnographic Museum is also worth seeing, as are the churches of St Marina and St Constantine & Helen.