In the northern part of the Greek Peloponnese (Achaia prefecture) at the foot of the castle ruins lie Panahaikon Salmeniko (also known as the Castle of Orgia and Oria).

The castle was built Salmeniko Achaean barons of the principality about 1280-1310 years. The castle was erected on top of the picturesque steep hill, next to which a river Founikas. It was the perfect place for a fortress. Soon the walls of the castle rose a big city.

In 1460 troops of the Ottoman Sultan Mehmed II invaded the Peloponnese and the city Despotate of the Morea (at that time the land of the Peloponnese under the control of the Byzantine Empire, and the Principality of Achaea and completely ceased to exist) one after the other, almost without offering resistance, under the control of the Turks. Salmeniko also led Graitzasa Paleologos held siege for almost a year, and only when the Janissaries blocked the water supply, the city capitulated. About 6,000 residents Salmeniko were enslaved and 900 boys aged 7 to 14 years are selected for devşirme ("blood tribute", "tax in blood" - a system of forced recruitment of boys their Christian families, followed by conversion to Islam and education to serve the Sublime Porto).

Meanwhile, the castle went on the defensive. Graitzas and his supporters are still in the citadel, they agreed to surrender, but put forth the conditions under which they were to be free to leave the fortress. Mehmed II accepted the conditions, and went in Aegio, leaving his place as governor of the Peloponnese and some Hamuzasa Fesalii who ignored the agreement and ordered his men to seize the first who attempted to leave the castle. On hearing this, Mehmed II replaced Hamuzasa Zaganos Pasha left the Peloponnese. Zaganos Pasha also resumed the siege of the castle, but, nevertheless, Graitzasu Paleologue nevertheless managed to escape and reach the coast, where he went to the Venetian fortress of Lepanto (modern Naupactus), where he took refuge.

Fall Salmeniko marked the complete subordination of the Peloponnesian land (except Venetian Nafplion, Methoni and Koroni) of the Ottoman Empire.

Unfortunately, to this day from the city Salmeniko and once majestic castle remained in ruins. Relatively well preserved a medieval bridge.