The most influential cities in this history are the thriving, influential cultural and artistic centers.
Unesco's Organization for Educational and Cultural Sciences has recognized the historic center of Florence, Italy as the World Cultural Heritage in 1982.
Italian researchers say they may have discovered a long-lost painting of artist Leonardo da Vinci. This painting is said to be behind a 16th-century mural in Florence.
Italian archaeologists have found the skull and skeleton of a woman suspected to be the woman in Leonardo da Vinci's masterpiece Mona Lisa.