Above the left bank of the river Lousios, at the base of a tall and wild rock and almost opposite the Philosophos Monastery, dominates the historic monastery of Timios Prodromos. It was built in the 16th century and is today one of the largest and most historic monasteries in the Peloponnese. It is a male monastery and has more monks than the other monasteries of Arcadia. Its tradition dates back to the middle of the 12th century (1167).
The frescoes, despite the damage, are remarkable and, according to Fotis Kontoglou, date back to the 16th century and belong to the Cretan School. In fact, the Cretan and Moscow are considered to belong to Theophanes. The monastery has a remarkable library with important theological and philosophical books. There are old photographs, ecclesiastical faces and letters of Kolokotroni in the Prefecture of Igoumenion and Archontariki.
The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.