The Visegrád Citadel is a historic fortress located in the town of Visegrád, Hungary. It sits on a hill overlooking the Danube River and was built in the 13th century. The citadel served as a royal residence and played a significant role in the defense of the region during various conflicts. Today, the Visegrád Citadel is a popular tourist destination, offering stunning views of the surrounding landscape. Visitors can explore its ancient walls and learn about its history, including its connection to the Visegrád Group, a cultural and political alliance of Central European countries.