The mountain village of Christianoupoli (also known as Christiani) is 12 kilometres from Filiatra and 15 kilometres from Kyparissia. It is built at the foothills of Mount Aigaleo at an altitude of 329 metres. The current village is built on top of an ancient settlement, while it is believed that the sanctuary of Sotiras (Savior) Zeus existed in the area.
During the Byzantine Empire era, it was a populous and prosperous state, which was also the seat of a Metropolis. In fact, at the end of the 11th century, it became Archbishopric from a simple Bishopric. The oldest name of the village was Christiani, but it has also been referred to as Christianon, at least since 1835.
The church of the Transfiguration of the Savior dominates the centre of the village. It is a Byzantine monument of the 11th century (1070-1075) that typologically belongs to the complex octagonal temples with narthex. It is considered the "boast of Moria" as it is compared, constructionally, with the temple of Agia Sophia in Constantinople. In the village, the visitor can also see the church of Agios Athanasios, which celebrates on the 17th of May or enjoy a walk to the springs with the crystal clear waters and the artificial lake with ducks and wooden bridges.