Plovdiv Period of National Revival, a number of notable icon-painters (called in Bulgarian "zografi", "зографи") from all regions of the country worked in Plovdiv such as Dimitar Zograf, his son Zafir Zograf, Zahari Zograf, Georgi Danchov, and others. After the Liberation, the Bulgarian painter of Czech origin Ivan Mrkvička came to work in the city. The Painters' Society was established there by artists from southern Bulgaria in 1912 whose members included painters Zlatyu Boyadzhiev, Tsanko Lavrenov and Sirak Skitnik. Today the city has more than 40 art galleries with most of them being privately owned. The Art Gallery of Plovdiv was
Plovdiv the year. Mists are common in the cooler months, especially along the banks of the Maritsa. On average there are 33 days with mist during the year. The history of Plovdiv spans more than eight millennia. Numerous nations have left their traces on the cultural layers of the city. The earliest signs of habitation on the territory of Plovdiv date as far back as the 6th millennium BCE. Plovdiv has settlement traces including necropolises dating from the Neolithic era, roughly 6000–5000 BCE, like the mounds Yasa Tepe 1 in Philipovo district and Yasa Tepe 2 in Lauta park. Archaeologists have