Some 50,000 people gathered on a central square Saturday to watch the opening show dubbed "We are all colors" with 1,500 local and foreign artists on several stages.
Squeezed between the Balkan and the Rodopi Mountains, Bulgaria's second-largest city has survived for thousands of years on the crossroads between Western Europe and the Middle East.
Plovdiv claims to be the oldest continually inhabited European city, with more than 6,000 years of history. Evidence of that can be seen in many architectural landmarks dating back to Thracian, Greek, Roman, Byzantine and Ottoman times.
The city on both sides of the Maritsa River is also known for its ethnic diversity. Many of its 340,000 inhabitants belong to the country's Turkish, Roma, Armenian, Greek and Jewish minorities, all of which have quite a strong influence on the city's vibrant cultural life.
Examples of this influence were presented during the opening music, light and dance show under the motto "Together."
Some 350 cultural events are scheduled in Plovdiv this year, including an exhibition featuring fragments of the Berlin Wall to mark 30 years since its fall.
Plovdiv, the first Bulgarian city to become a European culture capital, was also named among The New York Times' list of 52 places to go in 2019. It shares the 2019 culture title with the Italian city of Matera.
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