Alanya castle, also known as Alanya fortress, is a medieval castle located in the city of Alanya in the Antalya Province of Turkey. The castle was built by the Seljuks in the 13th century and is situated on a rocky peninsula that overlooks the Mediterranean Sea.

The castle has a fascinating history and has been occupied by a variety of civilizations throughout its existence, including the Byzantines, Seljuks, and Ottomans. It is known for its impressive architecture, with walls that stretch for nearly 6.5 kilometers and 140 towers.

The castle has several important structures within its walls, including a mosque, a cistern, and a palace. The palace was used by the sultan and his family during the Ottoman period and has been restored to its original condition, giving visitors a glimpse into the luxurious lifestyle of the ruling class during this time.

One of the most popular attractions within the castle is the Alanya Archaeological Museum, which contains a collection of artifacts from the various civilizations that have occupied the region throughout history. Visitors can see ancient coins, ceramics, and other items that provide insight into the daily lives of those who lived in the area.