The Anatolian Fortress, or Anadolu Hisari, is located on the Asian shore of the Bosphorus in the Beykoz district of Istanbul, at one of the narrowest sections of the strait. Although the source data mentions Aksaray, the fortress is actually situated not in central Istanbul but farther north, on the Bosphorus waterfront. It is one of the city's early Ottoman fortifications, clearly visible from the water and from the coastal streets.

The fortress was built at the end of the 14th century by order of Sultan Bayezid I as part of a strategy to control ship traffic through the Bosphorus. Later, on the eve of the conquest of Constantinople, the fortifications were strengthened, and Rumeli Hisari was built on the opposite European shore. Together, these fortresses made it possible to control passage through the strait.

The complex is relatively small: it includes the main tower, an inner courtyard, and outer walls with additional towers that appeared later. After the fall of Constantinople, the military importance of the fortress gradually declined, and in different periods it was used for observation and control of the coastal area.

For tourists, Anadolu Hisari is primarily interesting as a historic landmark on the Bosphorus and a rare monument of early Ottoman architecture. It is not always possible to enter, so the fortress is more often viewed from the outside - from the waterfront, from neighboring quarters, or during a boat trip. A visit here can be conveniently combined with a walk around the Beykoz district and along the water.