Anadolu Fortress, also known as the Anadolu Hisarı, is an ancient fortress located in Istanbul, Turkey. Built in 1394 by the Ottoman Sultan Beyazid I, the fortress is one of the oldest and most impressive structures in the country.

Located on a hill overlooking the Bosphorus Strait, the fortress was built as a defense against would-be attackers from the Black Sea. It has a strong, fortified wall surrounding it, which is made up of three main components – the main wall, the inner courtyard and the outer courtyard. The walls are made of stone, and are up to three meters thick in some places. On the outer wall, there are several towers, which are connected to the main wall by a series of stairs.

Inside the fortress, there are several buildings, which include a mosque, a palace, and a library. The palace was used by the sultan, and is said to have been incredibly luxurious. The library contained a vast collection of books, some of which were written by famous medieval scholars. The mosque housed an important Islamic school, where children would study the Quran and other religious texts.

The fortress is a popular tourist attraction, and is open for visitors to explore. Visitors can wander around the walls, visit the palace and mosque, and get a glimpse into the history of the city. It is also a great place to take pictures, as the views of the Bosphorus and the city skyline are stunning. There is also a cafe and a museum located inside the fortress, where visitors can learn more about the history of the fortress and the surrounding area.

The Anadolu Fortress is an important part of Istanbul’s history and culture, and is a fantastic place to visit. Whether you are a history buff or just want to explore the city, the Anadolu Fortress is an absolutely must-see destination.