Krešimir's Castle is a historic fortress located in the city of Šibenik, Croatia. It was built in the 11th century and served as a royal residence for the Croatian kings. The castle is named after King Krešimir IV, who ruled during the 11th century and is known for his contributions to the Croatian state. The castle features impressive stone walls and towers, offering stunning views of the surrounding area. Although much of the structure is in ruins today, it remains an important symbol of Croatia's medieval history and attracts many visitors interested in exploring its rich heritage.