Previously a Museum of the History of Capitalism, Working Class Movement and Socialist Construction, this museum has since been given over to the Plovdiv Regional History Museum as its Center of Modern History. It houses the permanent exposition “The Soul of the Japanese Doll” – a collection of traditional Japanese dolls, put together by volunteer Yuko Nakajima and her friends and added as an exhibition in the Plovdiv museum with the help of the Japan International Cooperation Agency (JICA) and the artistic design of Konstantin Kambarev. The collection includes 20 individual dolls, four groups of more than 40 dolls each, stands for the dolls, and additional toys and accessories.