Tver (the former Kalinin) is a port on the Volga and Tvertsa rivers. The chemical industry, the mechanical engineering are well developed. There are 3 theatres, 4 museums in the town: the Historical Museum, the Literary Museum, the Museum of Local Lore, the Museum named after Saltykov-Schedrin. Tver is famous for its Art Gallery. The town was founded in 12th century and has many architectural monuments of 16-19th centuries. The population 455600 person.