Anatolian Fortress

Anatolian Fortress

When the Turks arrived in Üsküdar under the rule of Orhan Gazi, the Ottomans became a major player on the forefront. Along with the Ottomans there had been three other strong powers that had deep desires of controlling the Bosphorus, they included, the Venetians, Genoeses and the Byzantines. Naturally, a political dogfight started between the powers. It was a time for change, new alliances were formed however, the two Italian powers, Venice and Genoa, would never stay on the same side due to their pursuit for power.  They had strong economic influences in the region as well as a very well organized trade route and their only motivation was trade. Genoa especially, had a great trade route on the Black Sea and the relations between Genoa and the Ottomans were generally good. Meanwhile, relations between the Byzantines and Ottomans weren’t that great.  They had periods of peace and periods of violence, but most of the time they were doubtful of each other. Nerves were stretched to a point that was enough to demolish ’s walls.

The tension started on the Bosphorus shores at the beginning of the 1390s. The Byzantine Emperor, Yoannis Paleologos, ordered a construction aiming to fix the city walls of Constantinople. Anatolian Fortress 1920sThis by the Byzantine Emperor made the sultan, who was busy in Anatolia, very angry and led him to insult the Byzantine Emperor. Sultan Bayezid then requested a demolition of the overhauled part of the city walls. Emperor Yoannis Paleologos was in desperation because his son Manuil Paleologos, the only faction heir, was in Bursa to join Sultan Bayezid’s assault.  Having no other choice, the repaired parts of the city walls were demolished. However, the Byzantine emperor was a proud man, he couldn’t bring himself to become a vassal, and eventually died of a nervous breakdown. This was due to his continued humiliation by the sultan.

The moment that Manuil Paleologos heard the news of his father’s death, he escaped from the Ottoman palace in Bursa and arrived in Constantinople to ascend the throne and finally begin to rule the Byzantine Empire. Anatolia-HissarNot so much time had passed since he became emperor that Sultan Bayezid had sent a messenger to ask that a Turkish town be built in Constantinople, along with a mosque and a “kadı” to be at the head of this town. The sultan’s requests were immediately declined. Consequently, Sultan Bayezid began to establish his permanent rule over a series of villages on the European coast thanks to an alliance with Genoa. Therefore, Emperor Manuil Paleologos was locked inside the city walls and his rule was recognized only in Constantinople. Still, Ottoman sultan had a great interest in taking Constantinople from him. Sultan was aware of his lack of cannons so he was not able to demolish the city walls. However hunger was a tool he could use to help him reach his goal. By keeping the Emperor locked inside the city walls with no access to the outside world, he would eventually run out of food forcing him to take action. Thus, Sultan Bayezid became the first Ottoman sultan who besieged Constantinople. His war against Constantinople continued between 1390 and 1402 and during this period the Ottomans besieged Constantinople four times.

Goksu Pours Anatolian FortresssAround this time Venice and Genoa remained silent and as a result the Byzantines had no real power to fight against the Ottomans. In preparations for his sieges of Constantinople, Sultan Bayezid, ordered the construction of the Anadolu Hisarı, known as the Anatolian Fortress in English. He had already known the best location for his castle was the site of the ancient Jupiter temple on the narrowest point of the Bosphorus (660 meter). The construction began on the Asian shore, where the beautiful Göksu River pours into the Bosphorus, and was completed almost in a year between 1394 and 1395.

Anadolu HisarıAnadolu Hisarı was composed of an inner square castle surrounded by walls on all sides and strengthened by a few towers. The main castle was a quadrangle design and its wall thickness changed between 2 and 3 meters. The three towers were all designed differently with different shapes such as a horseshoe, half round and cylindrical. During that time artillery had not yet been devolved in Europe so it was designed to cope with catapults and similar siege engines. Thus, Sultan Bayezid was able to control the Bosphorus, which would eventually help him enter Constantinople.

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Photo Credits: Dan Merino

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