Dushanbe is the capital of the Tajikistan with the real historic and cultural resources. In Dushanbe where is National Museum, National Library, Poets Sculptures adn tens cultural gardens amd places you can find live historic of the Tajik/Persian Nation. 

Writers from this region have made notable contributions to literature since the 10th century CE, and a vigorous folk literature continues. Tajik literature stems from a broader Persian literary tradition that can be traced back to the poet Rūdakī. Tajiks consider the Shāh-nāmeh to be the national epic and cherish the work of Rūmī. A number of Tajik poets and novelists achieved fame during the 20th century.

If like to have more information about the oldest history and civilisation of he Tajik/Persian Nation with the thousands year age, you should visit Dushanbe.