Modinakhe is a medieval castle located 1 km north of Sachkhere. Unfortunately, only parts of the Eastern and Western defensive walls with towers remain until today. In the yard there is a single-nave basilica, a reservoir and an underground wine cellar.
The castle served as a residence of noble families. It was built by Prince Papuna Tsereteli in the 18th century. Over the years it was in possession of Palavandishvilebi family and the great family of Tsereteli from Sachkhere. Since 1735 the castle served as a shelter for a great noble of Imereti, Papuna Tsereteli who rebelled against the King of Imereti Alexander I. The king tried to invade the castle however he did not succeed. In 1766, during Georgian war with Turks, the King Solomon I also hid in the castle and a year later Tsereteli ancestral gave the castle to the King. In 1810 when citizens of Imereti rebelled against the Russian Empire, Modinakhe was taken by the rebels but soon thereafter the Russian army invaded the castle and put its garrison there.
During the excavations conducted in 1967-75 archaeologists discovered old dwellings from the Late Bronze (25th – 22nd B.C.) and other from the Ancient Age (6th – 4th B.C.) which are prove that Modinakhe castle and surrounding hills were inhabited. Due to its strategic location the place was significantly developed throughout the centuries. In the inside yard of the castle archaeologists found many local and foreign objects of everyday usage and common burials. Some of the burials date back to the 16th B.C. and others to the 4th B.C. They also found bronze equipment, jewellery, gold objects, silver objects and Colchis and Roman coins which indicate trade relations.