Gjirokastra city is inscribed into UNESCO in 2005 as a rare example of an architectural character typical of the Ottoman period. Gjirokastra, in the Drinos river valley in southern Albania, features a series of outstanding two-story houses which were developed in the 17th century.The town also retains a bazaar, an 18th-century mosque and two churches of the same period. The historical center of the city is remarkably well preserved, and this is particularly true of their vernacular buildings. They have been continuously inhabited from ancient times down to the present day. Situated in the Balkans, in Southern Albania, and close to each other, they bear witness to the wealth and diversity of the urban and architectural heritage of this region. Gjirokastra was built by major landowners. Around the ancient 13th century citadel, the town has houses with turrets (the Turkish kule) which are characteristic of the Balkans region. Gjirokastra contains several remarkable examples of houses of this type, which date from the 17th century, but also more elaborate examples dating from the early 19th century.