Kertezi dominates at the beginning of the Vouraikos valley and was inhabited before the Mycenaean era. In its boundaries an old city is presumed to be the ancient Kynetha, the 5th city of the Arcadians/Azanians. It is one of the oldest head villages, on the outskirts of Kallifoni, with traditional "barbarian" houses, a picturesque Kefalovryso, dense forests, forming an idyllic landscape in its entirety.

Its central square is about 14 km far from the centre of Kalavrita. In the past it was the centre of the road network of the region through the animal shelters. It is at the same time a small natural paradise, a place with a rich history old or new, with monuments visible or not, with education at the forefront (with many schools before the Revolution of 1821), with 20 churches today, 11 holy names and countless iconostases. It has a market on the main street, about 300 m long. There are already plans to widen and improve the road from Krastiko to the centre of the village.

In Kertezi there are many preserved monuments of pre-Christian, neo-Byzantine, Frankish, Turkish and modern times. For some of them, conservation, restoration and promotion procedures have already begun.

In Kertezi we have the beginnings of the modern Vouraikos (old Erastinou). Until the 1960s it had eleven mills (ten water mills and one oil mill). Nowadays two of them are in good condition. It has about fifty springs, the most famous being Kefalovryso at the edge of the settlement, Neromana in the Firs, Kontis Vrysi at the foot of the chestnut tree, Kiossi and Bourbula at the foot of Desmenas, etc. The picturesque Kertezi is overgrown with wild chestnut trees, flowing with abundant water and producing walnuts, chestnuts, a variety of fruit and vegetables, as well as the famous Kertezitika beans, which you can buy.

It has a complete water supply network and one of the most complex irrigation systems in the country. You can do at least five closed routes within the settlement and many more in the wider area, which you don't have time to saturate.

Kertezi is a former town and the capital of the municipality of Kalliphonia from the time of Kapodistrias until the end of 1913. Since 1914 it has been a community that now belongs, after 1998 to the "Kapodistrian" and since 2010 to the "Kallikratic" Municipality of Kalavrita. In 2019 it acquired with the program "Cleisthenes" relative autonomy and a five-member Community Council. It is mainly a livestock and agricultural old town, but many other professionals have always lived there. If you find yourself in the village, visit the house of the fighter Anagnostis Striftobolas, the tower of Hassapopoulos, the river and definitely one of its holy churches, such as the Nativity of the Virgin Mary, with its famous icons, in the village square.