Sudak fortress is a medieval fortress located in the city of Sudak in Crimea, Ukraine. It was built by the Genoese in the 14th century and played an important role in the trade and political life of the Black Sea region.

The fortress is situated on a rocky hill overlooking the Black Sea and the city of Sudak. It consists of several towers and walls, and has a total area of about 30,000 square meters. The walls are up to 8 meters high and are reinforced with towers and battlements.

Inside the fortress, there are several buildings, including the Genoese governor's palace, a church, and a prison. There is also a well that provided water to the inhabitants of the fortress during sieges.

During its long history, the fortress was besieged many times by various armies, including the Mongols, Ottomans, and Russians. It was damaged during these battles and was later reconstructed and fortified by the Genoese.

Today, the Sudak fortress is a popular tourist attraction and a historical monument of Crimea. Visitors can explore the ruins of the fortress, climb its walls and towers, and enjoy the stunning views of the sea and the city.