Esztergom Castle is a historic fortress located in Esztergom, Hungary, overlooking the Danube River. It has played a significant role in the country's history, serving as a royal residence and a military stronghold. The castle's origins date back to the 10th century, and it has undergone various renovations and expansions over the centuries. Today, Esztergom Castle is a popular tourist destination, offering stunning views of the surrounding landscape and the Esztergom Basilica. Visitors can explore its ancient walls, learn about its rich history, and enjoy the beautiful architecture that reflects different periods of Hungarian history.