Esterházy Castle is a historic palace located in Austria, specifically in the town of Eisenstadt. Built in the 13th century, it served as the residence of the Esterházy family, a prominent noble family in the region. The castle features stunning Baroque architecture and beautifully landscaped gardens, making it a popular tourist destination. The castle is also known for its connection to the composer Joseph Haydn, who worked for the Esterházy family for many years. Today, Esterházy Castle hosts various cultural events, exhibitions, and concerts, showcasing its rich history and artistic heritage.