Istanbul is a very important city due to its historical background. When we category the cities up to historical background in the world, Istanbul will be at the top of the list. As a capital of three empires, this city has a deep spirit. Rumeli Fortress is one of the buildings that witnessed the historical events in the city.

It was built by Conquerer Mehmed II on the European side of the city. It was the one of the important tactics to conquer Constantinople. Its task was to control the marine way not to support Constantinople in 1452. It had a special architectural features. It is so big that the peak point can see miles away. It was an important military base on Bosphorus.

World military buildings are very glorious in everywhere. Istanbul has many glorious buildings witnessed the history.